Method and apparatus for detecting recrystallization in single-crystal high-temperature alloy blade, device, and storage medium

Abstract

The present application relates to the technical field of detection of recrystallization in single-crystal high-temperature alloy blades, and discloses a method and apparatus for detecting recrystallization in a single-crystal high-temperature alloy blade, a device, and a storage medium. The method comprises: constructing a single-crystal high-temperature alloy recrystallization database; performing a creep test on a single-crystal high-temperature alloy creep specimen containing recrystallization, and obtaining a corresponding single-crystal high-temperature alloy and a recrystallization damage tolerance of a corresponding blade thereof under a corresponding service condition; acquiring corresponding parameters of coordinate information of a deformation position of a single-crystal high-temperature alloy blade under test, inputting said parameters into the database, and obtaining a cross-sectional recrystallization area fraction and a maximum recrystallization depth of the deformation position of the single-crystal high-temperature alloy blade; and determining whether the obtained cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance, and obtaining a detection result. The accuracy of detection is high, the yield rate is improved, and a reference is provided for the formulation of production quality acceptance standards for single-crystal high-temperature alloy blades or test rods and the expansion of non-destructive testing.

Description

A single crystal high temperature alloy blade recrystallization detection method, device, equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the Patent Office of China on October 30, 2023, with application number 202311418794.9 and invention name “A method, device and equipment for detecting recrystallization of single crystal high-temperature alloy blades”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of recrystallization detection of single crystal high-temperature alloy blades, and in particular to a recrystallization detection method, device, equipment and storage medium for single crystal high-temperature alloy blades. Background Art

[0004] Blade cracks or fractures in single-crystal superalloy blades during test runs or official service are related to recrystallization on the blade surface. During the manufacturing process, single-crystal superalloy blades are inevitably subject to mechanical damage from core removal, cold deformation such as bumps and bumps. When heat-treated or in service at excessive temperatures, the blades tend to remain at temperatures above the recrystallization temperature, causing localized recrystallization on the blade surface. This static localized recrystallization introduces lateral grain boundaries into the alloy surface in the form of equiaxed crystals. These recrystallized crystals contain a large amount of grain-boundary strengthening elements, which are completely different from the original microstructure. The formation of such regions deteriorates the alloy's creep resistance, severely damaging its high-temperature creep resistance and even severely impacting the safe service of aircraft engines or gas turbines.

[0005] The existing method for detecting and evaluating recrystallization in directionally solidified blades is to select a blade from the same batch that is the most severely recrystallized during a macroscopic recrystallization inspection and perform a recrystallization depth test. If the recrystallization depth of the blades tested meets the technical requirements, the batch of blades is qualified. This method has poor accuracy and is prone to errors. For recrystallization depth detection, the changes in the microstructure of the directionally solidified blades after recrystallization are used to display the morphology of the recrystallized grains using a corrosion method, and the recrystallization depth is measured based on the corrosion and cross-section inspection of the blade surface. The recrystallization assessment is performed based on the recrystallization depth. Since the detection process requires etching and sectioning the blades, it is time-consuming and inefficient. At the same time, since the blades need to be dissected for measurement and analysis, the dissection causes serviceable blades to be unable to continue to serve, resulting in blade scrapping and increasing economic losses.

[0006] Summary of the Invention

[0007] In view of this, the embodiments of the present application provide a single crystal high-temperature alloy blade recrystallization detection method, device, equipment and storage medium to solve the problems of low accuracy and poor efficiency in recrystallization detection of single crystal high-temperature alloy blades in the prior art. When analyzing the blade to be evaluated, there is no need to dissect the blade, only the blade needs to be measured for analysis, which not only saves a lot of time, but also the damage-free evaluation can enable the serviceable blades to continue to serve, reducing the economic losses caused by the scrapping of blades due to dissection.

[0008] In a first aspect, an embodiment of the present application provides a method for detecting recrystallization of a single crystal high-temperature alloy blade, comprising:

[0009] Construct a single crystal superalloy recrystallization database;

[0010] Under preset conditions, creep tests were conducted on recrystallized single crystal superalloy creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions to obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under corresponding service conditions;

[0011] Obtaining corresponding parameters of coordinate information of the deformation position of the single crystal high temperature alloy blade to be detected, and inputting the information into the single crystal high temperature alloy recrystallization database to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high temperature alloy blade;

[0012] It is determined whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

[0013] The recrystallization detection method for single-crystal superalloy blades provided in the embodiments of this application is more accurate than conventional methods for detecting and evaluating recrystallization in directionally solidified superalloy blades, significantly helping to reduce the defective and scrap rates and improve the yield rate of single-crystal superalloy blades. It also provides a technical reference for the development of production quality acceptance standards for single-crystal superalloy blades or test bars and for the expansion of nondestructive testing methods, expanding and improving the industry-standard methods for detecting and evaluating recrystallization in directionally solidified superalloy blades.

[0014] In an optional embodiment, the method further includes:

[0015] A safety warning is issued for the deformation position that is detected as unsafe, which is used to prompt the staff to perform corresponding polishing or other post-processing work on the deformation position.

[0016] When an unsafe position coordinate is detected, the embodiment of the present application emits an early warning signal such as sound and light to prompt the staff to take timely action to ensure the safe operation of the blade, which is of great help in reducing the defective rate and scrap rate of single crystal high-temperature alloy blades and improving the finished product rate.

[0017] In an optional embodiment, the constructing of a single crystal high temperature alloy recrystallization database includes:

[0018] The single crystal high temperature alloy test rod is roughly cut along the direction perpendicular to the <0 0 1> crystal direction to obtain a circular sample or a square sample with a fixed crystal plane;

[0019] Determine the compressive crystal orientation of the circular specimen or the compressive crystal plane of the square specimen, perform an indentation test along the compressive crystal orientation of the circular specimen or perpendicular to the compressive crystal plane of the square specimen, heat treat the indented circular or square specimen and keep it at this temperature for a preset time before air cooling it, perform non-contact measurement on the indentation on the specimen surface, and obtain indentation parameters;

[0020] The sample is cut perpendicular to the <0 0 1> crystal direction at a preset distance from the indentation center, and the sample is ground and polished to the indentation center, and the recrystallization parameters are statistically obtained;

[0021] Obtain alloy parameters, shape parameters, and deformation parameters of circular or square specimens;

[0022] The indentation parameters, recrystallization parameters, alloy parameters, shape parameters and deformation parameters are matched one to one to obtain the single crystal high temperature alloy recrystallization database.

[0023] The embodiment of the present application constructs a single crystal high-temperature alloy recrystallization database by establishing a one-to-one correspondence between the indentation parameters, recrystallization parameters, alloy parameters, shape parameters and deformation parameters of the single crystal high-temperature alloy. It can comprehensively include relevant data on the recrystallization of the single crystal high-temperature alloy, which is conducive to more accurate matching of the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the coordinate information of the deformation position of the single crystal high-temperature alloy blade.

[0024] In an optional embodiment, the indentation parameters include: height, width, volume, and inclination parameters of the indentation;

[0025] The recrystallization parameters include: cross-sectional recrystallization area fraction and maximum recrystallization depth, wherein the cross-sectional recrystallization area fraction TRF=S0 / S, wherein S0 is the area of ​​the recrystallized region of the cross-sectional area, and S is the total area of ​​the cross-sectional area;

[0026] The alloy parameters include: alloy type, chemical composition, heat treatment system, physical, elastic and chemical properties, and mechanical properties of the single crystal high temperature alloy;

[0027] The shape parameters include: specimen size for circular specimens or square specimens;

[0028] The deformation parameters include: deformation crystal orientation or crystal plane parameters of the circular sample or square sample.

[0029] The embodiment of the present application can effectively improve the accuracy and reliability of the single crystal high temperature alloy recrystallization database by obtaining parameter data of each layer of the single crystal high temperature alloy.

[0030] In an optional embodiment, creep tests are conducted under the same test conditions on creep specimens with different recrystallization area fractions and maximum recrystallization depths under preset conditions to obtain the recrystallization damage tolerance of the corresponding single crystal high-temperature alloy and its corresponding blade under corresponding service conditions, including:

[0031] The creep time T of the creep specimen at a preset creep rate is taken as the creep life of the recrystallized single crystal high temperature alloy circular creep specimen or square creep specimen under corresponding service conditions;

[0032] Creep tests were carried out under the same test conditions on circular creep specimens or square creep specimens with different recrystallization area fractions and maximum recrystallization depths;

[0033] When the creep life is T, the corresponding cross-sectional recrystallization area fraction and the maximum recrystallization depth are the recrystallization damage tolerance of the single crystal high-temperature alloy and its corresponding blade under the corresponding service conditions. The corresponding cross-sectional recrystallization area fraction is expressed as TRF max , the maximum recrystallization depth is expressed as DR max .

[0034] In the embodiment of the present application, a creep test is performed on a creep specimen to obtain the recrystallization damage tolerance under corresponding service conditions, thereby providing a detection threshold standard for recrystallization detection of single crystal high-temperature alloy blades.

[0035] In an optional embodiment, the step of obtaining the coordinate information corresponding to the deformation position of the single crystal high temperature alloy blade to be detected includes:

[0036] Scan the unused blade that has completed all production links and does not contain recrystallization to obtain the three-dimensional coordinate information of the blade, and use the blade as the standard blade;

[0037] Scan the coordinate information of the deformation position of the single crystal high-temperature alloy blade to be tested of the same model and compare it with the standard blade to determine the deformation height, width, volume and inclination parameters corresponding to the coordinate information of the deformation position;

[0038] The temperature field and stress field of the single crystal high temperature alloy blade to be tested are analyzed to obtain the service temperature and stress range of the deformation position.

[0039] The embodiment of the present application obtains the coordinate information of the deformation position of the single crystal high-temperature alloy blade to be detected and matches the corresponding parameters with the single crystal high-temperature alloy recrystallization database to obtain the corresponding cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high-temperature alloy blade, which are used to detect whether it is safe.

[0040] In an optional embodiment, the determination of whether the cross-sectional recrystallized area fraction and the maximum recrystallized depth of the deformation position are less than the corresponding recrystallization damage tolerance, if so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe, includes:

[0041] When the cross-sectional recrystallization area fraction and the maximum recrystallization depth at the deformation position are both less than the corresponding TRF under the same service conditions max and DR max When the detection result corresponding to the deformation position is judged to be safe, the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are not less than the TRF under the same service conditions. max and DR max , the detection result corresponding to the deformation position is unsafe.

[0042] The embodiment of the present application compares the cross-sectional recrystallization area fraction at the deformation location of the single-crystal high-temperature alloy blade to be tested and the recrystallization damage tolerance corresponding to the maximum recrystallization depth. When at least one of the two is not less than the corresponding tolerance, the test result is unsafe and requires timely repair or replacement, providing technical support reference for staff.

[0043] In a second aspect, an embodiment of the present application provides a single crystal high-temperature alloy blade recrystallization detection device, comprising:

[0044] Database construction module, used to build a single crystal high-temperature alloy recrystallization database;

[0045] The recrystallization damage tolerance acquisition module is used to conduct creep tests on recrystallized single crystal superalloy creep specimens with different recrystallization area fractions and maximum recrystallization depths under preset conditions, and obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under corresponding service conditions;

[0046] a blade data acquisition module to be inspected, configured to obtain coordinate information corresponding to the deformation position of the single crystal high-temperature alloy blade to be inspected, and input the coordinate information into the single crystal high-temperature alloy recrystallization database to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high-temperature alloy blade;

[0047] The detection module is used to determine whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the obtained deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

[0048] In a third aspect, an embodiment of the present application provides a computer device, including:

[0049] The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the single crystal high-temperature alloy blade recrystallization detection method provided in the embodiment of the present application by executing the computer instructions.

[0050] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a computer to execute the single crystal high-temperature alloy blade recrystallization detection method provided in the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0052] FIG1 is a schematic flow chart of a method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application;

[0053] FIG2 is a schematic flow chart of another method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application;

[0054] FIG3 is a schematic flow chart of another method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application;

[0055] FIG4 is a schematic diagram of common crystal orientations according to an embodiment of the present application;

[0056] FIG5 is a structural block diagram of a single crystal high-temperature alloy blade recrystallization detection device according to an embodiment of the present application;

[0057] FIG6 is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0058] To make the purpose, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0059] The embodiment of the present application provides a single crystal high-temperature alloy blade recrystallization detection method, which is suitable for directionally solidified high-temperature alloy blade recrystallization detection to achieve higher accuracy, and is of great help in reducing the defective rate and scrap rate of single crystal high-temperature alloy blades and improving the finished product rate.

[0060] According to an embodiment of the present application, an embodiment of a method for detecting recrystallization of a single crystal high-temperature alloy blade is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0061] In this embodiment, a method for detecting recrystallization of a single crystal high-temperature alloy blade is provided, which can be used in the above-mentioned terminal device, such as a computer. FIG1 is a flow chart of the method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application. As shown in FIG1 , the flow chart includes the following steps:

[0062] Step S101: Constructing a single crystal superalloy recrystallization database. Specifically, the database is constructed by establishing a one-to-one correspondence between indentation parameters, recrystallization parameters, alloy parameters, shape parameters, and deformation parameters. It should be noted that alloys only recrystallize within the recrystallization temperature range, and different alloy types have different corresponding recrystallization temperature ranges.

[0063] Step S102: creep tests are performed on recrystallized single crystal high-temperature alloy creep specimens with different recrystallization area fractions and maximum recrystallization depths under preset conditions to obtain the recrystallization damage tolerance of the corresponding single crystal high-temperature alloy and its corresponding blade under corresponding service conditions.

[0064] Specifically, in the present embodiment, creep tests are conducted on circular creep specimens or square creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions. The recrystallization damage tolerance of the blade under the corresponding service conditions is calculated using the TRF method. max The maximum recrystallization depth is expressed as D Rmax To express.

[0065] Step S103: Obtain the coordinate information corresponding to the deformation position of the single crystal high temperature alloy blade to be detected, and input it into the single crystal high temperature alloy recrystallization database to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high temperature alloy blade.

[0066] Specifically, a 3D scanner is used to perform three-dimensional reverse measurement on the surface of a heat-treated single-crystal high-temperature alloy blade to obtain the coordinate information of the deformation position. The three-dimensional reverse measurement includes: three-dimensional data measurement, three-dimensional data processing, three-dimensional reconstruction, and three-dimensional model data output. First, a heavy-duty gas turbine turbine blade positioning fixture is used to position the blade, the three-dimensional scanner is turned on for calibration, a scanning reference is established, and a 45° angle is selected to perform continuous three-dimensional scanning on the blade. After scanning around the blade for one circle, a three-dimensional point cloud map and three-dimensional point cloud data of the blade are obtained. After processing the data, the coordinate information of the deformation position of the blade is obtained. Optionally, a 3D profilometer is used to accurately scan the coordinate information of the deformation position of the single-crystal high-temperature alloy blade to determine the deformation volume and deformation depth corresponding to the coordinate information.

[0067] In an optional embodiment, a finite element method is used to analyze the temperature field of the single crystal superalloy blade. Based on the three-dimensional solid model of the single crystal superalloy blade, a finite element model of the single crystal superalloy blade is established using ANSYS software. The element properties generated by the finite element model of the single crystal superalloy blade are set, the finite element model of the single crystal superalloy blade is meshed, and the finite element model of the single crystal superalloy blade is loaded and solved. A general post-processor is used to analyze the temperature field at the deformation location to obtain the service temperature and stress range at the deformation location. The coordinate information of the deformation location of the single crystal superalloy blade, including the corresponding deformation height, width, volume, inclination parameters, and the service temperature and stress range, is input into a single crystal superalloy recrystallization database, and the cross-sectional recrystallization area fraction and maximum recrystallization depth at the deformation location of the single crystal superalloy blade are output.

[0068] Step S104: determine whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance; if so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

[0069] Specifically, when the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are both less than the corresponding TRF under the same service conditions max and DR max When the detection result corresponding to the deformation position is judged to be safe, the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are not less than the TRF under the same service conditions.max and DR max , the detection result corresponding to the deformation position is unsafe.

[0070] Through steps S101 to S104, the single-crystal superalloy blade recrystallization detection method provided in this embodiment of the present application is more accurate than conventional methods for detecting and evaluating recrystallization in directionally solidified superalloy blades, significantly helping to reduce the defective and scrap rates and improve the yield rate of single-crystal superalloy blades. It also provides a technical reference for the development of production quality acceptance standards for single-crystal superalloy blades or test bars and the expansion of nondestructive testing methods, expanding and improving the industry standard for detecting and evaluating recrystallization in directionally solidified superalloy blades.

[0071] In this embodiment, a method for detecting recrystallization of a single crystal high-temperature alloy blade is provided, which can be used in the above-mentioned mobile terminal, such as a mobile phone, a tablet computer, etc. FIG2 is a flow chart of the method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application. As shown in FIG2 , the flow chart includes the following steps:

[0072] Step S201: Constructing a single crystal high temperature alloy recrystallization database. For details, please refer to step S101 of the embodiment shown in FIG1 , which will not be described in detail here.

[0073] Step S202: Under preset conditions, creep tests are conducted on recrystallized single crystal superalloy creep specimens with varying recrystallized area fractions and maximum recrystallization depths, to determine the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under the corresponding service conditions. For details, please refer to step S102 of the embodiment shown in FIG1 , and will not be further described here.

[0074] Step S203: Obtaining coordinate information corresponding to the location where the deformation occurred on the single-crystal superalloy blade to be inspected and inputting it into the single-crystal superalloy recrystallization database, thereby obtaining the cross-sectional recrystallized area fraction and maximum recrystallization depth at the location where the deformation occurred. For details, please refer to step S103 of the embodiment shown in FIG1 and will not be further described here.

[0075] Step S204: Determine whether the obtained recrystallized area fraction and maximum recrystallized depth of the cross section of the deformed location are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformed location is safe. If not, the detection result corresponding to the deformed location is unsafe. For details, please refer to step S104 of the embodiment shown in FIG. 1 , and will not be repeated here.

[0076] Step S205: A safety warning is issued for any unsafe deformation location detected, prompting personnel to perform appropriate polishing or other post-processing work on the deformed location. Specifically, when an unsafe location is detected, an audible or visual warning signal is emitted, prompting personnel to promptly address the situation and ensure safe operation of the blade.

[0077] In this embodiment, a method for detecting recrystallization of a single crystal high-temperature alloy blade is provided, which can be used in the above-mentioned mobile terminal, such as a mobile phone, a tablet computer, etc. FIG3 is a flow chart of the method for detecting recrystallization of a single crystal high-temperature alloy blade according to an embodiment of the present application. As shown in FIG3 , the flow chart includes the following steps:

[0078] Step S301: Constructing a single crystal high temperature alloy recrystallization database. Specifically, step S301 includes:

[0079] Step S3011: Rough-cut the single crystal superalloy test rod perpendicular to the <0 0 1> crystal orientation to obtain a circular specimen or a square specimen with a fixed crystal plane. Common crystal orientations are shown in FIG4 . In this embodiment of the present application, rough-cutting the single crystal superalloy test rod perpendicular to the <0 0 1> crystal orientation allows for quick and easy sample production.

[0080] Specifically, a circular specimen with a diameter of ΦD1*L1 or a square specimen with a fixed crystal surface of L1*W1 is obtained. The original cross-sectional area after rough cutting should be greater than or equal to 7mm. 2 . For circular specimens, ΦD0+2mm≤ΦD1≤ΦD0+4mm, where ΦD0 is the diameter of the gauge section of the circular creep specimen, and ΦD1 is the diameter of the circular specimen. The reason for ΦD0+2mm≤ΦD1 is to completely remove the indentation notch and retain the machining allowance, and the reason for ΦD1≤ΦD0+4mm is to ensure incomplete removal of recrystallization. The length of the circular specimen is L1, and the diameter of the hardness tester indenter for indentation is ΦD2. L1≥2*ΦD2 to ensure that the circular specimen can be fully deformed in the length direction. The length of the square specimen is L1, and the diameter of the hardness tester indenter for indentation is ΦD2. L1≥2*ΦD2 to ensure that the square specimen can be fully deformed in the length direction. The surface roughness of the circular or square specimen is Ra≤0.4, and the residual deformation of the specimen surface is reduced as much as possible to prevent recrystallization caused by surface residual deformation during subsequent heat treatment.

[0081] Step S3012: Determine the compressed crystal orientation of the circular specimen or the compressed crystal plane of the square specimen, perform an indentation test along the compressed crystal orientation of the circular specimen or perpendicular to the compressed crystal plane of the square specimen, heat treat the indented circular or square specimen and keep it warm for a preset time before air cooling it, perform non-contact measurement of the indentation on the specimen surface, and obtain the indentation parameters.

[0082] Specifically, metallography or X-ray backscattered Laue photography is used to determine the compressive crystal orientation [X1Y1Z1] of a circular specimen or the compressive crystal plane (x1y1z1) of a square specimen. A hardness tester is then used to perform an indentation test along the compressive crystal orientation [X1Y1Z1] of the circular specimen or perpendicular to the compressive crystal plane (x1y1z1) of the square specimen. The indentation should be located at half the length of the circular or square specimen to prevent one end of the specimen from tilting during the indentation process, causing the specimen to move out of the indentation position. The hardness tester can be a Brinell hardness tester, a Vickers hardness tester, or a Rockwell hardness tester. The heat treatment temperature must be within the recrystallization temperature range of the test alloy for recrystallization to occur. Vacuum heat treatment can be used to prevent oxidation from interfering with the test results during the heat treatment process. The holding time can be appropriately set based on the specific alloy. A 3D profilometer is used to perform non-contact measurement of the indentation on the specimen surface to obtain the indentation parameters. The indentation parameters include: indentation height, width, volume, and inclination parameters, and are automatically statistically analyzed using a 3D profilometer. At the same time, the 3D profile of the microscopic morphology of the sample indentation surface is reconstructed.

[0083] Step S3013: The sample is cut perpendicular to the <0 0 1> crystal orientation at a preset distance from the center of the indentation, and the sample is ground and polished to the center of the indentation. Recrystallization parameters are statistically analyzed to obtain the recrystallization parameters. Specifically, the sample is cut perpendicular to the <0 0 1> crystal orientation near the center of the indentation, and the sample is ground and polished to the center of the indentation. Recrystallization parameters are statistically analyzed to obtain the recrystallization parameters. The recrystallization parameters include: cross-sectional recrystallization area fraction and maximum recrystallization depth. The cross-sectional recrystallization area fraction (TRF) = S0 / S, where S0 is the area of ​​the recrystallized region in the cross section and S is the total area of ​​the cross section. The cross-sectional recrystallization area fraction can be observed and calculated using EBSD analysis. The maximum recrystallization depth is the maximum recrystallization depth from the sample surface to the recrystallization bottom. The maximum recrystallization depth can be observed and calculated using EBSD analysis.

[0084] Step S3014: Obtain alloy parameters, shape parameters, and deformation parameters of the circular or square specimen; specifically, alloy parameters include: alloy type, chemical composition, heat treatment system, physical, elastic and chemical properties, and mechanical properties of single crystal high-temperature alloy; shape parameters include: specimen size of the circular or square specimen; deformation parameters include: deformation crystal orientation or crystal plane parameters of the circular or square specimen, and crystal plane parameters include: crystal plane spacing, crystal plane surface density, and crystal plane surface density.

[0085] Step S3015: A one-to-one correspondence is established between the indentation parameters, recrystallization parameters, alloy parameters, shape parameters, and deformation parameters to obtain a single crystal high-temperature alloy recrystallization database.

[0086] Step S302: Under preset conditions, creep tests are conducted on recrystallized single crystal superalloy creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions to obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under corresponding service conditions. Specifically, step S302 includes:

[0087] Step S3021, taking the creep time T of the creep specimen at a preset creep rate (e.g., 1%) as the creep life of the recrystallized single crystal high temperature alloy circular creep specimen or square creep specimen under corresponding service conditions;

[0088] Step S3022, performing creep tests under the same test conditions on circular creep specimens or square creep specimens with different recrystallization area fractions and maximum recrystallization depths;

[0089] In the embodiment of the present application, the process of preparing the sample of local recrystallization mechanical properties is as follows: rough cutting the alloy test rod along a fixed direction; fine processing the alloy test rod into an intermediate sample, performing local indentation deformation with different indentation forces on multiple intermediate samples, and then heat treating the intermediate samples and keeping them warm for a certain period of time. Under the premise of the same heat treatment system, the indentation force applied to the intermediate samples is different, and the resulting recrystallization content is different, that is, the cross-sectional recrystallization area fraction and the maximum recrystallization depth quantified for recrystallization are different; then the intermediate samples are fine processed into target samples to complete the preparation of the sample containing local recrystallization mechanical properties, and then the prepared samples are used as creep samples for creep tests under the same test conditions according to national standards.

[0090] Step S3023: When the creep life is T, the corresponding cross-sectional recrystallization area fraction and the maximum recrystallization depth are the recrystallization damage tolerance of the single crystal high-temperature alloy and its corresponding blade under the corresponding service conditions. The corresponding cross-sectional recrystallization area fraction is expressed as TRF. max , the maximum recrystallization depth is expressed as DR max .

[0091] Step S303: Obtaining the coordinate information corresponding to the deformation position of the single crystal superalloy blade to be inspected, and inputting it into the single crystal superalloy recrystallization database to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal superalloy blade. Specifically, obtaining the coordinate information corresponding to the deformation position of the single crystal superalloy blade to be inspected includes:

[0092] A1, scanning a blade that has completed all production links and does not contain recrystallization and is not in service, obtaining the three-dimensional coordinate information of the blade, and using the blade as a standard blade;

[0093] A2. Scan the coordinate information of the deformation position of the single-crystal high-temperature alloy blade to be tested of the same model and compare it with the standard blade to determine the deformation height, width, volume, and inclination parameters corresponding to the coordinate information of the deformation position; it should be noted that the single-crystal high-temperature alloy blade to be tested can be the blade when it first leaves the factory or the single-crystal high-temperature alloy blade that has been in service. When it is the single-crystal high-temperature alloy blade to be tested, it can be used to detect the factory yield of the blade. When it is the single-crystal high-temperature alloy blade that has been in service, it can be used to detect the deformation caused by collision during service.

[0094] A3. Analyze the temperature field and stress field of the single crystal high temperature alloy blade to be tested to obtain the service temperature and stress range of the deformation position.

[0095] Step S304: Determine whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe. If not, the detection result corresponding to the deformation position is unsafe. Specifically, when the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are both less than the corresponding TRF under the same service conditions, max and DR max When the detection result corresponding to the deformation position is judged to be safe, the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are not less than the TRF under the same service conditions. max and DR max , the detection result corresponding to the deformation position is unsafe.

[0096] The embodiment of the present application compares the cross-sectional recrystallization area fraction at the deformation location of the single-crystal high-temperature alloy blade to be tested and the recrystallization damage tolerance corresponding to the maximum recrystallization depth. When at least one of the two is not less than the corresponding tolerance, the test result is unsafe and requires timely repair or replacement, providing technical support reference for staff.

[0097] This embodiment also provides a single crystal superalloy blade recrystallization detection device, which is used to implement the above-mentioned embodiments and optional implementations. Details already described are omitted. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

[0098] This embodiment provides a single crystal high temperature alloy blade recrystallization detection device, as shown in FIG5 , comprising:

[0099] The database construction module 501 is used to construct a single crystal high temperature alloy recrystallization database.

[0100] The recrystallization damage tolerance acquisition module 502 is configured to perform creep tests on recrystallized single crystal superalloy creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions under preset conditions to obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under corresponding service conditions;

[0101] The blade data acquisition module 503 to be tested is used to obtain the corresponding parameters of the coordinate information of the deformation position of the single crystal high-temperature alloy blade to be tested, and input them into the single crystal high-temperature alloy recrystallization database to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high-temperature alloy blade.

[0102] The detection module 504 is used to determine whether the obtained cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

[0103] In some optional implementations, the database construction module 501 includes:

[0104] The sample acquisition unit is used to obtain a single crystal high-temperature alloy test rod by rough cutting perpendicular to the <0 0 1> crystal direction to obtain a circular sample or a square sample with a fixed crystal plane;

[0105] an indentation parameter acquisition unit, for determining the compressed crystal direction of a circular specimen or the compressed crystal plane of a square specimen, performing an indentation test along the compressed crystal direction of the circular specimen or perpendicular to the compressed crystal plane of the square specimen, heat-treating the indented circular or square specimen and keeping it at this temperature for a preset time before air-cooling it, performing non-contact measurement of the indentation on the specimen surface, and acquiring the indentation parameters;

[0106] The recrystallization parameter acquisition unit is used to cut the sample perpendicular to the <0 0 1> crystal direction at a preset distance along the indentation center, grind and polish the sample to the indentation center, and perform statistics on the recrystallization parameters to obtain the recrystallization parameters;

[0107] Alloy parameter, shape parameter, and deformation parameter acquisition unit, used to obtain the alloy parameter, shape parameter, and deformation parameter of the circular or square specimen;

[0108] The database establishment unit is used to establish a one-to-one correspondence between indentation parameters, recrystallization parameters, alloy parameters, shape parameters and deformation parameters to obtain a single crystal high-temperature alloy recrystallization database.

[0109] In some optional embodiments, the indentation parameters include: the height, width, volume, and inclination parameters of the indentation; the recrystallization parameters include: the cross-sectional recrystallization area fraction and the maximum recrystallization depth, where the cross-sectional recrystallization area fraction TRF = S0 / S, where S0 is the area of ​​the recrystallized region of the cross-section, and S is the total area of ​​the cross-section; the alloy parameters include: the alloy type, chemical composition, heat treatment system, physical, elastic and chemical properties, and mechanical properties of the single crystal high-temperature alloy; the shape parameters include: the sample size of the circular sample or the square sample; the deformation parameters include: the deformation crystal orientation or crystal plane parameters of the circular sample or the square sample.

[0110] In some optional embodiments, the recrystallization damage tolerance acquisition module 502 includes:

[0111] A creep life setting unit is used to use the creep time T of the creep specimen at a preset creep rate as the creep life of a circular creep specimen or a square creep specimen of a single crystal high-temperature alloy containing recrystallization under corresponding service conditions;

[0112] Creep test unit, used to conduct creep tests on circular creep specimens or square creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions;

[0113] The recrystallization damage tolerance acquisition unit is used to obtain the cross-sectional recrystallization area fraction and the maximum recrystallization depth corresponding to the creep life T, which is the recrystallization damage tolerance of the single crystal high-temperature alloy and its corresponding blade under the corresponding service conditions. The corresponding cross-sectional recrystallization area fraction is expressed as TRF. max , the maximum recrystallization depth is expressed as DR max .

[0114] In some optional embodiments, the blade data acquisition module 503 to be inspected obtains the corresponding parameters of the coordinate information of the deformation position of the single crystal high-temperature alloy blade to be inspected, including: scanning the coordinate information of the deformation position of the single crystal high-temperature alloy blade to be inspected to determine the corresponding deformation volume and deformation depth of the deformation position; analyzing the temperature field of the single crystal high-temperature alloy blade to be inspected to obtain the service temperature range of the deformation position.

[0115] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0116] The single crystal high-temperature alloy blade recrystallization detection device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0117] The further functional description of each of the above modules is the same as that of the above corresponding embodiments and will not be repeated here.

[0118] An embodiment of the present application also provides a computer device having the single crystal high-temperature alloy blade recrystallization detection device shown in FIG5 above.

[0119] Please refer to Figure 6, which is a structural diagram of a computer device provided by an optional embodiment of the present application. As shown in Figure 6, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in or on the memory to display graphical information of a GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 takes a processor 10 as an example.

[0120] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0121] The memory 20 stores instructions that can be executed by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0122] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0123] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0124] The computer device further includes a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0125] The embodiments of the present application also provide a computer-readable storage medium. The above-mentioned method according to the embodiment of the present application can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; optionally, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0126] Although the embodiments of the present application have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A single crystal high temperature alloy blade recrystallization detection method, characterized in that: include: Construct a single crystal superalloy recrystallization database; Under preset conditions, creep tests are carried out on single crystal superalloy creep specimens containing recrystallization with different recrystallization area fractions and maximum recrystallization depths under the same test conditions to obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under corresponding service conditions; Obtaining corresponding parameters of coordinate information of the deformation position of the single crystal high temperature alloy blade to be detected, and inputting them into the single crystal high temperature alloy recrystallization database, to obtain the cross-sectional recrystallization area fraction and maximum recrystallization depth of the deformation position of the single crystal high temperature alloy blade; It is determined whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the obtained deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

2. The single crystal high temperature alloy blade recrystallization detection method according to claim 1, characterized in that: It also includes: issuing a safety warning to the deformed position whose detection result is unsafe, so as to prompt the staff to perform corresponding polishing and repair or other post-processing work on the deformed position.

3. The single crystal high temperature alloy blade recrystallization detection method according to claim 1, characterized in that: The method of constructing a single crystal high temperature alloy recrystallization database comprises: Obtain a circular sample or a square sample with a fixed crystal plane obtained by rough-cutting a single crystal high-temperature alloy test rod perpendicular to the <0 0 1> crystal direction; Determine the compressed crystal direction of the circular sample or the compressed crystal plane of the square sample, perform an indentation test along the compressed crystal direction of the circular sample or perpendicular to the compressed crystal plane of the square sample, heat treat the circular or square sample after indentation and keep it warm for a preset time and then air cool it, perform non-contact measurement on the indentation on the sample surface, and obtain indentation parameters; The sample is cut perpendicular to the <0 0 1> crystal direction at a preset distance from the center of the indentation, and the sample is ground and polished to the center of the indentation, and the recrystallization parameters are statistically obtained; Obtain alloy parameters, shape parameters, and deformation parameters of round or square specimens; The indentation parameters, recrystallization parameters, alloy parameters, shape parameters and deformation parameters are matched one by one to obtain a single crystal high temperature alloy recrystallization database.

4. The single crystal high temperature alloy blade recrystallization detection method according to claim 3, characterized in that: The indentation parameters include: height, width, volume, and inclination parameters of the indentation; The recrystallization parameters include: cross-sectional recrystallization area fraction and maximum recrystallization depth, wherein the cross-sectional recrystallization area fraction TRF=S0 / S, wherein S0 is the area of ​​the recrystallization region of the cross-sectional area, and S is the total area of ​​the cross-sectional area; The alloy parameters include: alloy type, chemical composition, heat treatment system, physical, elastic and chemical properties, and mechanical properties of the single crystal high temperature alloy; The shape parameters include: the specimen size of a circular specimen or a square specimen; The deformation parameters include: deformation crystal orientation or crystal plane parameters of a circular sample or a square sample.

5. The single crystal high temperature alloy blade recrystallization detection method according to claim 1, characterized in that: The creep test is carried out under the same test conditions on the single crystal high temperature alloy creep specimens containing recrystallization with different recrystallization area fractions and maximum recrystallization depths under the preset conditions to obtain the recrystallization damage tolerance of the corresponding single crystal high temperature alloy and its corresponding blade under the corresponding service conditions, including: The creep time T of the creep specimen at a preset creep rate is taken as the creep life of a circular creep specimen or a square creep specimen of a single crystal high-temperature alloy containing recrystallization under corresponding service conditions; Creep tests are carried out on circular creep specimens or square creep specimens with different recrystallization area fractions and maximum recrystallization depths under the same test conditions; When the creep life is T, the corresponding cross-sectional recrystallization area fraction and the maximum recrystallization depth are the recrystallization damage tolerance of the single crystal high-temperature alloy and its corresponding blade under the corresponding service conditions. The corresponding cross-sectional recrystallization area fraction is expressed as TRF max , the maximum recrystallization depth is expressed as DR max .

6. The single crystal high temperature alloy blade recrystallization detection method according to claim 4, characterized in that: The method of obtaining the coordinate information corresponding to the deformation position of the single crystal high temperature alloy blade to be detected includes: Scan the unused blade that has completed all production links and does not contain recrystallization to obtain the three-dimensional coordinate information of the blade, and use the blade as the standard blade; Scan the coordinate information of the deformation position of the single crystal high temperature alloy blade to be tested of the same model and compare it with the standard blade to determine the deformation height, width, volume and inclination parameters corresponding to the coordinate information of the deformation position; The temperature field and stress field of the single crystal high-temperature alloy blade to be tested are analyzed to obtain the service temperature and stress range of the deformation position.

7. The single crystal high temperature alloy blade recrystallization detection method according to claim 5, characterized in that: The judging whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position are less than the corresponding recrystallization damage tolerance, if yes, the detection result corresponding to the deformation position is safe, if not, the detection result corresponding to the deformation position is unsafe, including: When the cross-sectional recrystallization area fraction and the maximum recrystallization depth at the deformation position are both smaller than the corresponding TRF under the same service conditions max and DR max When the detection result corresponding to the deformation position is judged to be safe, when either the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position is not less than the TRF under the same service conditions max and DR max , the detection result corresponding to the deformation position is unsafe.

8. A single crystal high temperature alloy blade recrystallization detection device, characterized in that: include: Database construction module, used to construct a single crystal high temperature alloy recrystallization database; The recrystallization damage tolerance acquisition module is used to carry out creep tests on single crystal superalloy creep specimens containing recrystallization with different recrystallization area fractions and maximum recrystallization depths under the same test conditions under preset conditions, and obtain the recrystallization damage tolerance of the corresponding single crystal superalloy and its corresponding blade under the corresponding service conditions; The data acquisition module of the blade to be detected is used to obtain the coordinate information corresponding parameters of the deformation position of the single crystal high temperature alloy blade to be detected, and input them into the single crystal high temperature alloy recrystallization database to obtain the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the deformation position of the single crystal high temperature alloy blade; The detection module is used to determine whether the cross-sectional recrystallization area fraction and the maximum recrystallization depth of the obtained deformation position are less than the corresponding recrystallization damage tolerance. If so, the detection result corresponding to the deformation position is safe; otherwise, the detection result corresponding to the deformation position is unsafe.

9. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the single crystal high-temperature alloy blade recrystallization detection method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the single crystal high-temperature alloy blade recrystallization detection method according to any one of claims 1 to 7.

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