Nickel-based alloy homogenization heat treatment evaluation method and system and storage medium

Abstract

The invention provides a nickel-based alloy homogenization heat treatment evaluation method and system and a storage medium, and relates to the technical field of alloy material preparation, the method comprises the following steps: measuring the element segregation degree of a nickel-based alloy to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy; according to the segregation coefficient sum A and the maximum segregation coefficient B, the segregation grade D corresponding to the nickel-based alloy is determined; the nickel-based alloy is subjected to homogenization treatment according to the segregation grade D, and the residual segregation coefficient delta and the segregation coefficient K of the nickel-based alloy are determined; and evaluating the homogenization treatment degree according to the residual segregation coefficient delta and the segregation coefficient K. By adopting a chemical component analysis method, accurate determination of the segregation degree of the elements in the nickel-based alloy cast ingot is realized, the homogenization heat treatment effect of the nickel-based alloy cast ingot is improved, and the uniformity of the material performance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of alloy material preparation, and in particular to a method, system and storage medium for evaluating homogenization heat treatment of a nickel-based alloy. Background Art

[0002] With the development of modern industry, the demand for high-performance alloy materials is growing. Nickel-based alloys are widely used in industrial manufacturing due to their excellent properties. However, nickel-based alloys are prone to element segregation during the casting process, which can lead to uneven material properties and affect the performance of the final application. Therefore, the homogenization heat treatment process requires a lot of experiments to determine the appropriate process parameters to ensure the effect of the homogenization treatment.

[0003] In the prior art, in order to improve the homogenization effect, fixed homogenization processing parameters are usually used for processing. However, the above method often cannot accurately control the degree of homogenization, which easily leads to excessive coarseness of cast grains and difficulty in recrystallization. Therefore, the existing homogenization treatment process is unstable. Summary of the invention

[0004] The problem solved by the invention is to improve the homogenization heat treatment effect on nickel-based alloy ingots.

[0005] In order to solve the above problems, the present invention provides a method, system and storage medium for evaluating homogenization heat treatment of nickel-based alloys.

[0006] In a first aspect, the present invention provides a method for evaluating a homogenization heat treatment of a nickel-based alloy, comprising:

[0007] Determining the element segregation degree of the nickel-based alloy to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy;

[0008] Determining a segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B;

[0009] Performing homogenization treatment on the nickel-based alloy according to the segregation grade D, and determining a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy;

[0010] The degree of homogenization treatment is evaluated based on the residual segregation coefficient δ and the segregation coefficient K.

[0011] Optionally, the element segregation degree of the nickel-based alloy is measured to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy, including:

[0012] Taking a sample from the center of the ingot of the nickel-based alloy;

[0013] By performing chemical composition analysis on the sample, the segregation coefficient of the main segregation element in the nickel-based alloy is obtained;

[0014] According to the segregation coefficient of the main segregation element, the total segregation coefficient A of the main segregation element and the maximum segregation coefficient B are obtained,

[0015] The total segregation coefficient A is the sum of the segregation coefficients of all the main segregation elements; and the maximum segregation coefficient B is the maximum value of all the segregation coefficients.

[0016] Optionally, determining the segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B includes:

[0017] Setting a threshold interval collection to correspond to a plurality of said segregation levels D, wherein each said segregation level D is defined by a range corresponding to said segregation coefficient sum A and said maximum segregation coefficient B respectively;

[0018] comparing the total segregation coefficient A and the maximum segregation coefficient B with the ranges respectively corresponding to the total segregation coefficient A and the maximum segregation coefficient B in the threshold interval collection;

[0019] According to the comparison result, the nickel-based alloy is classified into a corresponding segregation grade D.

[0020] Optionally, classifying the nickel-based alloy into a corresponding segregation grade D according to the comparison result includes:

[0021] When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 10;

[0022] When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 9;

[0023] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 7;

[0024] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 6;

[0025] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 5;

[0026] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 4;

[0027] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is greater than or equal to 2.5, the segregation level D is determined to be 3;

[0028] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 2;

[0029] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 1.

[0030] Optionally, the homogenizing the nickel-based alloy according to the segregation grade D to determine the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy comprises:

[0031] According to the segregation level D, determining a homogenization process parameter corresponding to the segregation level D;

[0032] Performing homogenization treatment on the nickel-based alloy according to the homogenization treatment process parameters, and measuring the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy after the homogenization treatment;

[0033] The residual segregation coefficient δ is the maximum residual segregation coefficient of the nickel-based alloy after homogenization heat treatment, and the segregation coefficient K is the maximum segregation coefficient after homogenization heat treatment.

[0034] Optionally, the evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises:

[0035] evaluating the degree of homogenization treatment according to whether the residual segregation coefficient δ and the segregation coefficient K meet a preset homogenization treatment qualification standard;

[0036] When the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard, it is determined that the homogenization treatment is qualified;

[0037] Each of the segregation levels D corresponds to a preset homogenization processing qualified standard, and the preset homogenization processing qualified standard is that the residual segregation coefficient δ and the segregation coefficient K are respectively within the range interval corresponding to the segregation level D.

[0038] Optionally, the evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises:

[0039] If the segregation grade D is 10, when the standard of the residual segregation coefficient δ is less than or equal to 0.25, and the standard of the segregation coefficient K is less than or equal to 1.20, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard;

[0040] If the segregation level D is 9 to 7, when the standard of the residual segregation coefficient δ is less than or equal to 0.2, and the standard of the segregation coefficient K is less than or equal to 1.15, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard;

[0041] If the segregation grade D is 6 to 1, when the standard of the residual segregation coefficient δ is less than or equal to 0.15, and the standard of the segregation coefficient K is less than or equal to 1.10, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard.

[0042] Optionally, the nickel-based alloy homogenization heat treatment evaluation method further includes:

[0043] Before the homogenization treatment, the nickel-based alloy is preheated within a preset temperature range lower than the homogenization treatment temperature.

[0044] In a second aspect, the present invention provides a nickel-based alloy homogenization heat treatment evaluation system, comprising:

[0045] A measuring unit, used for measuring the element segregation degree of the nickel-based alloy, and obtaining the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy;

[0046] A grading unit, configured to determine a segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B;

[0047] A processing unit, configured to perform homogenization treatment on the nickel-based alloy according to the segregation grade D, and determine a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy;

[0048] An evaluation unit is used to evaluate the degree of homogenization according to the residual segregation coefficient δ and the segregation coefficient K.

[0049] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the above-mentioned method for evaluating homogenization heat treatment of nickel-based alloys is implemented.

[0050] The nickel-based alloy homogenization heat treatment evaluation method, system and storage medium of the present invention realize the accurate determination of the degree of element segregation in the nickel-based alloy ingot by adopting the chemical composition analysis method, and provide accurate initial segregation data for homogenization heat treatment by obtaining the total segregation coefficient A and the maximum segregation coefficient B; and then use these data, combined with the set threshold interval collection, to realize the accurate division of the segregation grade D of the nickel-based alloy, and then formulate personalized homogenization treatment process parameters for alloys with different segregation grades. The treatment method of the present invention realizes more targeted and more accurate homogenization degree control, avoiding the problems of excessive coarseness of cast grains and difficulty in recrystallization caused by excessive or insufficient treatment. In addition, the present invention realizes quantitative evaluation of the homogenization treatment effect by measuring the residual segregation coefficient δ and segregation coefficient K after homogenization treatment, and evaluating according to the preset qualified standards; the evaluation method of the present invention not only improves the consistency and reliability of the treatment quality, but also provides a clear standard for quality control. In summary, the present invention improves the homogenization heat treatment effect of nickel-based alloy ingots, ensures the uniformity of material properties, improves the performance and reliability of the final product, while reducing the number of experiments and energy waste, improving production efficiency, and achieving the dual goals of reducing production costs while ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 A flowchart of a method for evaluating a nickel-based alloy homogenization heat treatment according to an embodiment of the present invention;

[0052] Figure 2 The structure block diagram of a nickel-based alloy homogenization heat treatment evaluation system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0054] Combination Figure 1 As shown, the present invention provides a method for evaluating homogenization heat treatment of a nickel-based alloy, comprising:

[0055] The element segregation degree of the nickel-based alloy is measured to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy.

[0056] Specifically, the degree of element segregation of the nickel-based alloy is first measured. The sample is obtained from the center of the nickel-based alloy ingot. The sample at this position can better represent the composition of the entire ingot. Then, the main segregation elements in the sample are quantitatively analyzed by chemical composition analysis methods, such as spectral analysis or mass spectrometry, to obtain their segregation coefficients. The sum of these segregation coefficients is defined as A, and the maximum value among them is defined as B.

[0057] For example, if the main segregation elements of a nickel-based alloy ingot are zirconium (Zr), niobium (Nb) and titanium (Ti), then by analyzing the distribution of these elements in the ingot, their segregation coefficients can be obtained, and then A and B can be calculated.

[0058] According to the total segregation coefficient A and the maximum segregation coefficient B, the segregation grade D corresponding to the nickel-based alloy is determined.

[0059] Specifically, the segregation grade D of the nickel-based alloy is determined according to the total segregation coefficient A and the maximum segregation coefficient B, and different A and B values ​​correspond to different segregation grades. Such a division is based on a large amount of experimental data and engineering experience, and can more scientifically reflect the segregation degree of the alloy ingot.

[0060] For example, if the A value is greater than or equal to 6 and the B value is greater than or equal to 3.0, the segregation grade D of the nickel-based alloy is determined to be grade 10, which is the highest grade of segregation, meaning that a more stringent homogenization treatment is required.

[0061] The nickel-based alloy is homogenized according to the segregation grade D, and a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy are determined.

[0062] Specifically, after the segregation level D is determined, the nickel-based alloy is subjected to homogenization treatment. The purpose of the homogenization treatment is to reduce or eliminate the element segregation in the alloy, thereby improving the performance of the material. The present invention sets corresponding homogenization treatment process parameters, such as temperature, time and heat treatment system, according to the segregation level D. For example, for ingots with high segregation levels, it may be necessary to perform homogenization treatment at a higher temperature for a longer time. After the treatment is completed, the alloy is analyzed again to determine its residual segregation coefficient δ and segregation coefficient K.

[0063] The degree of homogenization treatment is evaluated based on the residual segregation coefficient δ and the segregation coefficient K.

[0064] Specifically, the degree of homogenization treatment is evaluated according to the residual segregation coefficient δ and the segregation coefficient K. The present invention sets a set of evaluation criteria, which clarifies the values ​​that δ and K should reach after homogenization treatment for alloys with different segregation grades D. For example, for an alloy with a segregation grade D of 10, if δ after homogenization treatment does not exceed 0.25 and K does not exceed 1.20, the homogenization treatment of the ingot is considered to be qualified. Such an evaluation method provides a clear quality control standard for homogenization treatment, ensuring the consistency and reliability of the treatment effect. In this way, not only the effect of the homogenization treatment is improved, but also energy waste is avoided and production efficiency is improved.

[0065] The nickel-based alloy homogenization heat treatment evaluation method of the present invention realizes the accurate determination of the degree of element segregation in the nickel-based alloy ingot by adopting the chemical composition analysis method, and provides accurate initial segregation data for homogenization heat treatment by obtaining the total segregation coefficient A and the maximum segregation coefficient B; and then utilizes these data, combined with the set threshold interval collection, to realize the accurate division of the segregation grade D of the nickel-based alloy, and then can formulate personalized homogenization treatment process parameters for alloys with different segregation grades. The treatment method of the present invention realizes more targeted and more accurate homogenization degree control, and avoids the problems of excessive coarseness of cast grains and difficulty in recrystallization caused by excessive or insufficient treatment. In addition, the present invention realizes quantitative evaluation of the homogenization treatment effect by measuring the residual segregation coefficient δ and the segregation coefficient K after homogenization treatment, and evaluating according to the preset qualified standards; the evaluation method of the present invention not only improves the consistency and reliability of the treatment quality, but also provides a clear standard for quality control. In summary, the present invention improves the homogenization heat treatment effect of nickel-based alloy ingots, ensures the uniformity of material properties, improves the performance and reliability of the final product, while reducing the number of experiments and energy waste, improving production efficiency, and achieving the dual goals of reducing production costs while ensuring product quality.

[0066] Optionally, the element segregation degree of the nickel-based alloy is measured to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy, including:

[0067] Taking a sample from the center of the ingot of the nickel-based alloy;

[0068] By performing chemical composition analysis on the sample, the segregation coefficient of the main segregation element in the nickel-based alloy is obtained;

[0069] According to the segregation coefficient of the main segregation element, the total segregation coefficient A of the main segregation element and the maximum segregation coefficient B are obtained,

[0070] The total segregation coefficient A is the sum of the segregation coefficients of all the main segregation elements; and the maximum segregation coefficient B is the maximum value of all the segregation coefficients.

[0071] Specifically, the center of the ingot is selected as the sampling point because this area can represent the composition distribution of the entire ingot to the greatest extent, thereby ensuring that the segregation coefficient obtained can accurately reflect the segregation degree of the entire ingot. For example, for a 3-ton GH4169 alloy ingot with a diameter of 508 mm, a representative sample can be obtained by drilling a sample at the center of the ingot, and then the chemical composition analysis of the main segregation elements such as niobium (Nb), molybdenum (Mo) and titanium (Ti) in the sample is performed. The element content in the sample is quantitatively determined by chemical composition analysis such as inductively coupled plasma atomic emission spectroscopy (ICP-AES) or mass spectrometry. Through these analyses, the segregation coefficients of each main segregation element can be obtained. Then, the segregation coefficients of all the main segregation elements are added to obtain the total segregation coefficient A; at the same time, the maximum value of these segregation coefficients is determined, which is the maximum segregation coefficient B. For example, if the segregation coefficients of Nb, Mo, and Ti are measured to be 2.57, 1.23, and 1.59, respectively, the total segregation coefficient A is 2.57+1.23+1.59=5.39, and the maximum segregation coefficient B is 2.57.

[0072] In this optional embodiment, by accurately measuring the segregation coefficient, it is possible to ensure the selection of the most appropriate homogenization process parameters, avoid over-treatment or under-treatment, and improve the performance and uniformity of the material. In addition, this embodiment reduces unnecessary energy consumption by more accurately controlling the homogenization process, while also ensuring the plasticity and uniformity of the ingot, providing high-quality materials for subsequent forging and processing.

[0073] Optionally, determining the segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B includes:

[0074] Setting a threshold interval collection to correspond to a plurality of said segregation levels D, wherein each said segregation level D is defined by a range corresponding to said segregation coefficient sum A and said maximum segregation coefficient B respectively;

[0075] Compare the total segregation coefficient A and the maximum segregation coefficient B with the ranges corresponding to the total segregation coefficient A and the maximum segregation coefficient B in the threshold interval collection;

[0076] According to the comparison result, the nickel-based alloy is classified into a corresponding segregation grade D.

[0077] Specifically, the nickel-based alloy is divided into different segregation grades D according to the total segregation coefficient A and the maximum segregation coefficient B, and each segregation grade D has its corresponding range of A and B based on the predefined threshold interval collection. For example, if the total segregation coefficient A≥6 and the maximum segregation coefficient B≥3.0, the alloy is classified as the highest segregation grade D10. As the A and B values ​​decrease, the alloy will be classified into lower segregation grades, such as when A is between 4.5 and 6 and B is between 2.5 and 3.0, the alloy is classified as segregation grade D7. This embodiment allows specific homogenization process parameters to be set for each segregation grade D to achieve more accurate and effective processing. For example, for alloys of segregation grade D10, a higher heat treatment temperature and a longer holding time may be required, while alloys of lower segregation grades may require a lower temperature and a shorter holding time. In this way, the present invention can ensure that each ingot is subjected to the homogenization treatment that is most suitable for its segregation degree, thereby improving the overall quality and uniformity of the material.

[0078] In this optional embodiment, a standardized and systematic method is provided to evaluate and treat element segregation in nickel-based alloys, thereby ensuring the quality and consistency of the final product. Secondly, by setting specific processing parameters for each segregation level, not only the homogenization process is optimized, but also energy waste is reduced and production costs are minimized. In addition, the present invention also improves the flexibility and adaptability of the production process. The present invention allows the treatment process to be flexibly adjusted according to the specific segregation degree of the ingot, rather than using a treatment method that is the same for all ingots, thereby improving production efficiency and material properties.

[0079] Optionally, classifying the nickel-based alloy into a corresponding segregation grade D according to the comparison result includes:

[0080] When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 10;

[0081] When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 9;

[0082] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 7;

[0083] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 6;

[0084] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 5;

[0085] When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 4;

[0086] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is greater than or equal to 2.5, the segregation level D is determined to be 3;

[0087] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 2;

[0088] When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 1.

[0089] Specifically, in conjunction with the following Table 1, the segregation grade D of the nickel-based alloy is determined by the threshold interval precisely defined by the specific values ​​of the total segregation coefficient A and the maximum segregation coefficient B, and the alloy is divided into different segregation grades. For example, if the total segregation coefficient A of a nickel-based alloy ingot is measured to be 7, and the maximum segregation coefficient B is 3.2, according to the standard of this embodiment, this ingot will be judged as segregation grade D10, because A≥6 and B≥3.0, and such classification provides clear guidance for subsequent homogenization heat treatment. Further, if the total segregation coefficient A of another ingot is 5.5 and the maximum segregation coefficient B is 2.8, the ingot will be judged as segregation grade D7, because it falls within the threshold interval of A between 4.5 and 6 and B≥3.0.

[0090]

[0091] In this optional embodiment, a suitable homogenization process can be customized for ingots with different segregation levels to ensure that each ingot can receive the treatment that best suits its segregation level. The accuracy and effectiveness of the homogenization treatment are ensured, and each ingot can receive personalized heat treatment according to its segregation level. Secondly, this embodiment also avoids the problem of over-treatment or under-treatment, thereby saving energy and reducing possible material waste. In addition, by precisely controlling the homogenization process, it also helps to improve the overall quality and performance consistency of nickel-based alloy materials. In summary, the present invention optimizes the homogenization process and improves production efficiency and material properties through scientific and reasonable segregation grade division, which is of great significance for promoting the development of the nickel-based alloy industry.

[0092] Optionally, the homogenizing the nickel-based alloy according to the segregation grade D to determine the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy comprises:

[0093] According to the segregation level D, determining a homogenization process parameter corresponding to the segregation level D;

[0094] Performing homogenization treatment on the nickel-based alloy according to the homogenization treatment process parameters, and measuring the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy after the homogenization treatment;

[0095] The residual segregation coefficient δ is the maximum residual segregation coefficient of the nickel-based alloy after homogenization heat treatment, and the segregation coefficient K is the maximum segregation coefficient after homogenization heat treatment.

[0096] Specifically, the segregation level D of the nickel-based alloy is accurately determined, and then the corresponding homogenization process parameters are determined. For example, for a nickel-based alloy with a segregation level D of 10, it may be necessary to keep the heat at a higher temperature for a longer time to fully eliminate element segregation. The nickel-based alloy is homogenized by the determined process parameters. After the homogenization treatment is completed, the residual segregation coefficient δ and the segregation coefficient K of the treated nickel-based alloy are determined by further chemical composition analysis to evaluate the effect of the homogenization treatment. For example, if the residual segregation coefficient δ of a nickel-based alloy ingot with a segregation level D of 10 after homogenization is 0.2 and the segregation coefficient K is 1.1, these values ​​will be compared with the preset standards to evaluate whether the homogenization treatment achieves the expected effect.

[0097] In this optional embodiment, firstly, the accuracy and effectiveness of the homogenization treatment are ensured, and each ingot can receive the treatment most suitable for its segregation degree. Secondly, by accurately controlling the homogenization process, scientifically and rationally dividing the segregation grades and corresponding homogenization treatment, not only the treatment process is optimized, but also the production efficiency and material properties are improved.

[0098] Optionally, the evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises:

[0099] evaluating the degree of homogenization treatment according to whether the residual segregation coefficient δ and the segregation coefficient K meet a preset homogenization treatment qualification standard;

[0100] When the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard, it is determined that the homogenization treatment is qualified;

[0101] Each of the segregation levels D corresponds to a preset homogenization processing qualified standard, and the preset homogenization processing qualified standard is that the residual segregation coefficient δ and the segregation coefficient K are respectively within the range interval corresponding to the segregation level D.

[0102] Specifically, this embodiment determines whether the homogenization treatment of the nickel-based alloy is qualified based on the evaluation system of the residual segregation coefficient δ and the segregation coefficient K, and ensures that each segregation level D has its corresponding preset qualification standard, which defines the specific numerical range of δ and K. For example, for an ingot with a segregation level D of level 10, the qualified standard set is that the residual segregation coefficient δ does not exceed 0.25 and the segregation coefficient K does not exceed 1.20; if the measurement results after the homogenization treatment show that both coefficients meet the preset standards, it can be determined that the homogenization treatment of the ingot is qualified.

[0103] For example, assuming a nickel-based alloy ingot with a segregation grade of D7, after homogenization treatment, the residual segregation coefficient δ is measured to be 0.18, and the segregation coefficient K is 1.13; according to the preset qualified standard, for grade D7, the set standard is that δ does not exceed 0.2, and K does not exceed 1.15; since these two measured values ​​are within the preset range, it can be determined that the homogenization treatment of the ingot has reached the qualified level.

[0104] In this optional embodiment, a quantitative and objective evaluation method is provided, which can accurately judge the effect of the homogenization treatment and ensure the quality of the final product. Secondly, by setting clear qualification standards, this method helps to reduce the subjectivity of human judgment and improve the consistency and reliability of the evaluation process. In addition, this embodiment also helps to optimize the production process and can quickly feedback the effect of the homogenization treatment, thereby reducing rework and waste and improving production efficiency.

[0105] Optionally, the evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises:

[0106] If the segregation grade D is 10, when the standard of the residual segregation coefficient δ is less than or equal to 0.25, and the standard of the segregation coefficient K is less than or equal to 1.20, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard;

[0107] If the segregation level D is 9 to 7, when the standard of the residual segregation coefficient δ is less than or equal to 0.2, and the standard of the segregation coefficient K is less than or equal to 1.15, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard;

[0108] If the segregation grade D is 6 to 1, when the standard of the residual segregation coefficient δ is less than or equal to 0.15, and the standard of the segregation coefficient K is less than or equal to 1.10, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard.

[0109] Specifically, in combination with the following Table 2, this embodiment proposes a detailed evaluation standard for determining whether the nickel-based alloy ingots with different segregation grades D have met the expected quality requirements after homogenization treatment. For an ingot with a segregation grade D of 10, if the residual segregation coefficient δ does not exceed 0.25 and the segregation coefficient K does not exceed 1.20, the homogenization treatment of the ingot is considered to be qualified. For ingots with segregation grades D of 9 to 7, the qualified standard is δ not exceeding 0.2 and K not exceeding 1.15; and for ingots with segregation grades D of 6 to 1, the qualified standard is further reduced to δ not exceeding 0.15 and K not exceeding 1.10. This grading standard ensures that each ingot receives appropriate quality evaluation according to its degree of segregation.

[0110] For example, assuming that there is a nickel-based alloy ingot with a segregation grade D9, after homogenization treatment, the measured residual segregation coefficient δ is 0.18 and the segregation coefficient K is 1.12. According to the standards of the present invention, these two values ​​meet the qualified standards of segregation grade D9 (δ≤0.2 and K≤1.15). Therefore, it can be determined that the homogenization treatment of this ingot is qualified.

[0111]

[0112] In this optional embodiment, an accurate and systematic method is provided to evaluate the effect of homogenization treatment, ensuring the quality and consistency of nickel-based alloy ingots. Secondly, by setting specific qualification standards for each segregation grade, the evaluation process is made more objective and reliable, reducing the interference of human factors. In addition, this method also helps to optimize the production process because it can quickly feedback the effect of homogenization treatment, thereby reducing rework and waste and improving production efficiency. In short, this embodiment not only improves the quality and efficiency of nickel-based alloy production, but also ensures a higher level of quality assurance.

[0113] Optionally, the nickel-based alloy homogenization heat treatment evaluation method further includes:

[0114] Before the homogenization treatment, the nickel-based alloy is preheated within a preset temperature range lower than the homogenization treatment temperature.

[0115] Specifically, this step involves preheating the nickel-based alloy within a preset temperature range below the temperature of the upcoming homogenization treatment. For example, if the temperature of the homogenization treatment is set to 1100°C, the preheating treatment will be carried out in the temperature range of 900°C to 1000°C. The purpose of the preheating treatment is to gradually heat the ingot to a suitable temperature, thereby reducing the thermal stress and material defects that may be caused by excessive temperature differences during the subsequent homogenization treatment. Through this preheating treatment, the internal structure of the alloy ingot is gradually adjusted, reducing the risk of internal cracks or uneven expansion caused by rapid heating. For example, for a 6-ton GH4169 alloy ingot with a diameter of Φ660mm, before the homogenization treatment is carried out, it is first preheated at 950°C for a period of time, and then gradually heated to the temperature required for the homogenization treatment. Such an operation not only improves the safety of the treatment process, but also helps to improve the effect of the homogenization treatment, so that element segregation can be more effectively eliminated.

[0116] In this optional embodiment, adding a preheat treatment step helps to protect the integrity of the material by reducing the thermal stress during the heat treatment process, thereby reducing the risk of material rupture or cracking. Secondly, the preheat treatment helps to improve the effect of the homogenization treatment. The preheat treatment provides a milder environment for the diffusion of alloy elements, making the element distribution more uniform. By reducing the defects that may occur during the heat treatment process, the performance and reliability of the final product are improved.

[0117] Second, combining Figure 2 As shown, the present invention provides a nickel-based alloy homogenization heat treatment evaluation system, comprising:

[0118] A measuring unit, used for measuring the element segregation degree of the nickel-based alloy, and obtaining the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy;

[0119] A grading unit, configured to determine a segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B;

[0120] A processing unit, configured to perform homogenization treatment on the nickel-based alloy according to the segregation grade D, and determine a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy;

[0121] An evaluation unit is used to evaluate the degree of homogenization according to the residual segregation coefficient δ and the segregation coefficient K.

[0122] The nickel-based alloy homogenization heat treatment evaluation system of the present invention realizes the accurate determination of the degree of element segregation in the nickel-based alloy ingot by adopting the chemical composition analysis method, and provides accurate initial segregation data for homogenization heat treatment by obtaining the total segregation coefficient A and the maximum segregation coefficient B; and then utilizes these data, combined with the set threshold interval collection, to realize the accurate division of the segregation grade D of the nickel-based alloy, and then can formulate personalized homogenization treatment process parameters for alloys with different segregation grades. The treatment method of the present invention realizes more targeted and more accurate homogenization degree control, and avoids the problems of excessive coarseness of cast grains and difficulty in recrystallization caused by excessive or insufficient treatment. In addition, the present invention realizes quantitative evaluation of the homogenization treatment effect by measuring the residual segregation coefficient δ and the segregation coefficient K after homogenization treatment, and evaluating them according to the preset qualified standards; the evaluation method of the present invention not only improves the consistency and reliability of the treatment quality, but also provides a clear standard for quality control. In summary, the present invention improves the homogenization heat treatment effect of nickel-based alloy ingots, ensures the uniformity of material properties, improves the performance and reliability of the final product, while reducing the number of experiments and energy waste, improving production efficiency, and achieving the dual goals of reducing production costs while ensuring product quality.

[0123] In a third aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the above-mentioned method for evaluating homogenization heat treatment of nickel-based alloys is implemented.

[0124] The computer-readable storage medium of the present invention realizes the accurate determination of the degree of element segregation in the nickel-based alloy ingot by adopting the chemical composition analysis method, and provides accurate initial segregation data for homogenization heat treatment by obtaining the total segregation coefficient A and the maximum segregation coefficient B; and then utilizes these data, combined with the set threshold interval collection, to realize the accurate division of the segregation grade D of the nickel-based alloy, and then can formulate personalized homogenization treatment process parameters for alloys of different segregation grades. The treatment method of the present invention realizes more targeted and more accurate homogenization degree control, and avoids the problems of excessive coarseness of cast grains and difficulty in recrystallization caused by excessive or insufficient treatment. In addition, the present invention realizes the quantitative evaluation of the homogenization treatment effect by measuring the residual segregation coefficient δ and the segregation coefficient K after homogenization treatment, and evaluating them according to the preset qualified standards; the evaluation method of the present invention not only improves the consistency and reliability of the treatment quality, but also provides a clear standard for quality control. In summary, the present invention improves the homogenization heat treatment effect of nickel-based alloy ingots, ensures the uniformity of material properties, improves the performance and reliability of the final product, while reducing the number of experiments and energy waste, improving production efficiency, and achieving the dual goals of reducing production costs while ensuring product quality.

[0125] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0126] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0127] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for evaluating homogenization heat treatment of nickel-based alloys, characterized in that: include: Determining the element segregation degree of the nickel-based alloy to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy; Determining a segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B; Performing homogenization treatment on the nickel-based alloy according to the segregation grade D, and determining a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy; The degree of homogenization treatment is evaluated based on the residual segregation coefficient δ and the segregation coefficient K.

2. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 1, characterized in that: The element segregation degree of the nickel-based alloy is measured to obtain the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy, including: Taking a sample from the center of the ingot of the nickel-based alloy; By performing chemical composition analysis on the sample, the segregation coefficient of the main segregation element in the nickel-based alloy is obtained; According to the segregation coefficient of the main segregation element, the total segregation coefficient A of the main segregation element and the maximum segregation coefficient B are obtained, The total segregation coefficient A is the sum of the segregation coefficients of all the main segregation elements; and the maximum segregation coefficient B is the maximum value of all the segregation coefficients.

3. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 1, characterized in that: Determining the segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B includes: Setting a threshold interval collection to correspond to a plurality of said segregation levels D, wherein each said segregation level D is defined by a range corresponding to said segregation coefficient sum A and said maximum segregation coefficient B respectively; comparing the total segregation coefficient A and the maximum segregation coefficient B with the ranges respectively corresponding to the total segregation coefficient A and the maximum segregation coefficient B in the threshold interval collection; According to the comparison result, the nickel-based alloy is classified into a corresponding segregation grade D.

4. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 3, characterized in that: The nickel-based alloy is classified into a corresponding segregation grade D according to the comparison result, including: When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 10; When the total segregation coefficient A is greater than or equal to 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 9; When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is greater than or equal to 3.0, the segregation level D is determined to be 7; When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.5 and 3.0, the segregation level D is determined to be 6; When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 5; When the total segregation coefficient A is between 4.5 and 6 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 4; When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is greater than or equal to 2.5, the segregation level D is determined to be 3; When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 2.0 and 2.5, the segregation level D is determined to be 2; When the total segregation coefficient A is less than or equal to 4.5 and the maximum segregation coefficient B is between 1.0 and 2.0, the segregation level D is determined to be 1.

5. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 1, characterized in that: The step of performing homogenization treatment on the nickel-based alloy according to the segregation grade D to determine the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy comprises: According to the segregation level D, determining a homogenization process parameter corresponding to the segregation level D; Performing homogenization treatment on the nickel-based alloy according to the homogenization treatment process parameters, and measuring the residual segregation coefficient δ and the segregation coefficient K of the nickel-based alloy after the homogenization treatment; The residual segregation coefficient δ is the maximum residual segregation coefficient of the nickel-based alloy after homogenization heat treatment, and the segregation coefficient K is the maximum segregation coefficient after homogenization heat treatment.

6. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 1, characterized in that: The step of evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises: evaluating the degree of homogenization treatment according to whether the residual segregation coefficient δ and the segregation coefficient K meet a preset homogenization treatment qualification standard; When the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard, it is determined that the homogenization treatment is qualified; Each of the segregation levels D corresponds to a preset homogenization processing qualified standard, and the preset homogenization processing qualified standard is that the residual segregation coefficient δ and the segregation coefficient K are respectively within the range interval corresponding to the segregation level D.

7. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 6, characterized in that: The step of evaluating the homogenization degree according to the residual segregation coefficient δ and the segregation coefficient K comprises: If the segregation grade D is 10, when the standard of the residual segregation coefficient δ is less than or equal to 0.25, and the standard of the segregation coefficient K is less than or equal to 1.20, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard; If the segregation level D is 9 to 7, when the standard of the residual segregation coefficient δ is less than or equal to 0.2, and the standard of the segregation coefficient K is less than or equal to 1.15, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard; If the segregation grade D is 6 to 1, when the standard of the residual segregation coefficient δ is less than or equal to 0.15, and the standard of the segregation coefficient K is less than or equal to 1.10, it is determined that the residual segregation coefficient δ and the segregation coefficient K meet the preset homogenization treatment qualification standard.

8. The method for evaluating homogenization heat treatment of nickel-based alloy according to claim 1, characterized in that: Also includes: Before the homogenization treatment, the nickel-based alloy is preheated within a preset temperature range lower than the homogenization treatment temperature.

9. A nickel-based alloy homogenization heat treatment evaluation system, characterized in that: include: A measuring unit, used for measuring the element segregation degree of the nickel-based alloy, and obtaining the total segregation coefficient A and the maximum segregation coefficient B of the nickel-based alloy; A grading unit, configured to determine a segregation grade D corresponding to the nickel-based alloy according to the total segregation coefficient A and the maximum segregation coefficient B; A processing unit, configured to perform homogenization treatment on the nickel-based alloy according to the segregation grade D, and determine a residual segregation coefficient δ and a segregation coefficient K of the nickel-based alloy; An evaluation unit is used to evaluate the degree of homogenization according to the residual segregation coefficient δ and the segregation coefficient K.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for evaluating homogenizing heat treatment of a nickel-based alloy according to any one of claims 1 to 8 is implemented.

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