Device for observing compression mechanical property and real-time observation of metal microcolumn

Abstract

The utility model relates to a device for real-time observation of compression mechanical properties of a metal microcolumn. The device comprises a base, a switching clamping groove, a sample table, a force sensing controller, a single-axis displacement platform, a double-axis displacement platform, a mechanical driver, a pressure detection probe and an integrated interface. The device is simple in design principle and easy to implement; the characteristics of light weight, portability, simple assembly and the like are realized; the relative position between the sample table and the pressing needle can be adjusted in three directions, so that the experiment operation is convenient; the deformation process of the microstructure under the microscopic scale can be observed in real time, changes of parameters such as deformation, displacement and stress of the microstructure in the loading process are allowed to be monitored in real time, and timely data feedback is provided for an experiment.

Description

Technical Field

[0001] The utility model belongs to the technical field of in-situ mechanical property testing instruments, and particularly relates to a device for testing the compression mechanical properties of metal micro-columns and real-time observation. Background Art

[0002] With the development of material design and manufacturing towards smaller scales, the material properties and behaviors at the micron scale are crucial for the development of new materials and the optimization of the properties of existing materials. In the current field of materials science and engineering, the need to understand the mechanical properties and behaviors of materials at the micron scale is becoming increasingly urgent.

[0003] At the micron scale, the mechanical properties and behaviors of materials may change significantly, including strength, toughness, failure modes, etc. Traditional mechanical testing methods are difficult to provide sufficient information at the microscale, while in-situ observation can monitor the deformation, failure, and microstructure evolution of materials during the loading process in real time. At the same time, a scanning electron microscope has the characteristics of high resolution and high magnification, and can observe the microstructure of materials in real time. Combining with in-situ compression experiments, it is possible to directly observe and analyze the deformation and failure process of materials under pressure.

[0004] In the prior art, the observation device does not have high-precision displacement adjustment ability, does not have three degrees of freedom, the adjustment is not flexible and convenient, and the precision of the mechanical driver is not high either. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a device for testing the compression mechanical properties of metal micro-columns and real-time observation, which can measure material properties under a microscope and explore material failure evolution. It is light, portable, and easy to assemble. It can adjust the relative position between the sample stage and the indenter in three directions, and the experimental operation is convenient; the force sensing controller has high precision and sampling frequency, which can meet the high-precision measurement requirements under different strain rates; the utility model can observe the deformation process of the microstructure at the microscale in real time, allowing real-time monitoring of the changes in parameters such as deformation, displacement, and stress of the structure during the loading process, and providing timely data feedback for the experiment.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A device for real-time observation of compression mechanical properties of metal microcolumns, comprising a base, an adapter card slot, a sample stage, a force sensing controller, a uniaxial displacement platform, a biaxial displacement platform, a mechanical driver, a pressure detection probe, and an integrated interface; the sample stage is installed in front of the force sensing controller; the force sensing controller is installed above the biaxial displacement platform; the mechanical driver is installed above the uniaxial displacement platform; the pressure detection probe is installed above the mechanical driver; the uniaxial displacement platform and the biaxial displacement platform are installed on the base at a suitable distance; the adapter card slot is installed below the base by two nuts; the base is an optical flat plate, supporting the entire device, and the integrated interface is located at a corner of the base, and is used to collect all wires on the test mechanism and transmit signals.

[0008] Preferably, the adapter card slot is used to install the device.

[0009] Preferably, the sample stage is a nail-type sample stage with cylindrical mounting legs at the bottom, made of aluminum, with a platform diameter of 12.5 mm and a height of 3 mm, and a leg length of 2 mm in diameter and 8 mm in height.

[0010] Preferably, the measuring range of the force sensor controller is 1N, the minimum accuracy of the sensor is 1mN, and the response frequency of the sensor is 300Hz.

[0011] Preferably, the table size of the uniaxial displacement platform is 40 40mm, material is aluminum, minimum scale is 0.01mm, accuracy is 0.02mm, parallelism is 0.02mm, mass is 0.17kg, displacement adjustment is performed by rotating the differential head.

[0012] Preferably, the table size of the dual-axis displacement platform is 40 40mm, stroke is ±6.5mm, maximum load is 95.2N, minimum scale is 0.01mm, accuracy is 0.005mm, parallelism is 0.005mm, mass is 0.46kg, and displacement adjustment in two directions is performed by rotating two differential heads.

[0013] Preferably, the maximum stroke of the mechanical driver is 12 mm and the minimum displacement increment is 2 nm.

[0014] Preferably, the pressure detection probe adopts a tungsten steel needle with a needle body diameter of 0.7 mm, a needle tip diameter of 0.02 mm, and a total length of 17 mm.

[0015] The utility model has the following beneficial effects:

[0016] (1) The design principle is simple and easy to implement;

[0017] (2) The mechanical drive has high precision and the displacement control achieves high accuracy;

[0018] (3) When placed under a microscope, the deformation and its evolution of the specimen can be observed in real time;

[0019] (4) It has degrees of freedom in three directions, namely X, Y, and Z, and the adjustment is more flexible and convenient.

[0020] Developing in-situ mechanical devices at the microscale, especially conducting in-situ compression experiments in combination with a scanning electron microscope, is conducive to promoting the research and development and application of new materials, and driving the in-depth understanding and exploration of the mechanical behavior of materials at the microscale. These efforts will help promote the development of the field of materials science and provide important guidance and support for future material design and manufacturing. Description of the Drawings

[0021] Figure 1 This is the layout diagram of the present utility model placed under a scanning electron microscope.

[0022] Figure 2 This is the structural diagram of the device for the compression mechanical properties and real-time observation of metal micro-columns of the present utility model.

[0023] Figure 3 This is the detailed diagram of the adapter card slot.

[0024] In the figure, the reference numerals are: 1 - base, 2 - adapter card slot, 3 - sample stage, 4 - force sensing controller, 5 - single-axis displacement platform, 6 - biaxial displacement platform, 7 - mechanical driver, 8 - pressure detection probe, 9 - integrated interface. Detailed Embodiment

[0025] The following will introduce the present utility model in detail in conjunction with the attached Figure 2 drawings and specific embodiments. However, the following embodiments are only for explaining the present utility model, and the protection scope of the present utility model should include all the contents of the claims. Moreover, through the description of the following embodiments, those skilled in the art can fully implement all the contents of the claims of the present utility model.

[0026] As Figure 2 shown, a device for the compression mechanical properties and real-time observation of metal micro-columns of the present utility model includes a base 1, an adapter card slot 2, a sample stage 3, a force sensing controller 4, a single-axis displacement platform 5, a biaxial displacement platform 6, a mechanical driver 7, a pressure detection probe 8, and an integrated interface 9.

[0027] The sample stage 3 is installed in front of the force sensing controller 4; the force sensing controller 4 is installed above the biaxial displacement platform 6; the mechanical driver 7 is installed above the uniaxial displacement platform 5; the pressure detection probe 8 is installed above the mechanical driver 7; the uniaxial displacement platform 5 and the biaxial displacement platform 6 are installed on the base 1 at an appropriate distance; the adapter card slot 2 is installed under the base 1 by two nuts; the base 1 is an optical flat plate that supports the entire device, and the integrated interface 9 is located at a corner of the base 1 for collecting all the wires on the test mechanism and transmitting signals.

[0028] Before performing the compression experiment, the sample preparation is completed. When performing the compression experiment, the specimen is placed on the sample stage 3. By rotating the differential head of the biaxial displacement platform 6, the specimen is positioned in the vertical field of view of the pressure detection probe 8. Then, by rotating the differential head of the uniaxial displacement platform 5, the Z-direction position of the pressure detection probe 8 is adjusted so that the indenter of the pressure detection probe 8 is directly opposite the specimen. The adapter card slot 2 is installed under the base 1 by two nuts.

[0029] As Figure 3 shown, the adapter card slot 2 is installed under the base 1 by two nuts.

[0030] Preferably, the sample stage is a nail-shaped sample stage with cylindrical mounting legs at the bottom, made of aluminum, with a platform diameter of 12.5 mm, a height of 3 mm, a leg length of 2 mm, and a diameter of 8 mm.

[0031] Preferably, the range of the force sensing controller is 1 N, the minimum accuracy of the sensor is 1 mN, and the response frequency of the sensor is 300 Hz.

[0032] Preferably, the table size of the uniaxial displacement platform is 40 × 40 mm, made of aluminum, with a minimum scale of 0.01 mm, an accuracy of 0.02 mm, a parallelism of 0.02 mm, a mass of 0.17 kg, and displacement adjustment is performed by rotating the differential head.

[0033] Preferably, the table size of the biaxial displacement platform is 40 × 40 mm, with a stroke of ±6.5 mm, a maximum load of 95.2 N, a minimum scale of 0.01 mm, an accuracy of 0.005 mm, a parallelism of 0.005 mm, a mass of 0.46 kg, and two-direction displacement adjustment is performed by rotating two differential heads.

[0034] Preferably, the maximum stroke of the mechanical driver is 12 mm, and the minimum displacement increment is 2 nm.

[0035] Preferably, the pressure detection probe uses a tungsten steel tip needle, with a needle body diameter of 0.7 mm, a tip diameter of 0.02 mm, and a total length of 17 mm.

[0036] As Figure 1 shown, the specific working principle of the present utility model is as follows:

[0037] Before conducting the compression experiment, the preparation of the sample is completed. When conducting the compression experiment, the specimen is placed on the sample stage. By adjusting the biaxial displacement platform, the specimen is positioned in the vertical field of view of the pressure detection probe. Then, by adjusting the uniaxial displacement platform to adjust the Z-direction position of the pressure detection probe, the indenter of the pressure detection probe is made to face the specimen directly.

[0038] After the installation and debugging of the sample are completed, the device is placed into the scanning electron microscope, and the device is installed on the sample stage of the scanning electron microscope using the adapter card slot. The flange on the scanning electron microscope is replaced with a sealing flange, and the wires are connected properly. Then, the evacuation process of the chamber of the scanning electron microscope is started. When the air pressure in the chamber of the scanning electron microscope reaches the working air pressure, the electron gun is turned on to emit electrons, and the position of the sample stage is adjusted so that the sample is in a suitable position in the scanning electron microscope. Parameters such as focus, contrast, brightness, and magnification are adjusted.

[0039] During the test, in-situ observation is carried out using the scanning electron microscope, and videos and pictures are taken to achieve in-situ observation while conducting mechanical property tests on the specimen.

[0040] In summary, the present utility model provides a device for measuring the properties of materials and exploring the failure evolution of materials under a scanning electron microscope for exploring the microstructure evolution of micron materials under compressive loads. It is lightweight and portable, with simple assembly, and can adjust the relative position between the sample stage and the indenter in three directions, making the experimental operation convenient.

[0041] It should be noted that according to the above embodiments of the present utility model, those skilled in the art can fully implement the entire scope of the independent claims and dependent claims of the present utility model, and the implementation process and method are the same as those of the above embodiments; and the parts not elaborated in detail in the present utility model belong to the well-known technology in the art.

Claims

1. A device for the compressive mechanical properties and real-time observation of metal micro-columns, characterized in that, It includes a base, a transfer card slot, a sample stage, a force sensing controller, a single-axis displacement platform, a dual-axis displacement platform, a mechanical driver, a pressure detection probe, and an integrated interface; the sample stage is installed in front of the force sensing controller; The force sensing controller is installed above the dual-axis displacement platform; The mechanical driver is installed above the single-axis displacement platform; The pressure detection probe is installed above the mechanical driver; the single-axis displacement platform and the dual-axis displacement platform are installed on the base at an appropriate distance; The transfer card slot is installed under the base by two nuts; The base is an optical flat plate that supports the entire device. The integrated interface is located at a corner of the base and is used to gather all the wires on the test mechanism and transmit signals.

2. The device for the compression mechanical properties and real-time observation of metal micro-columns according to claim 1, wherein: The transfer card slot is used to install the device.

3. The device for the compression mechanical properties and real-time observation of metal micro-columns according to claim 1, wherein: The sample stage is a nail-shaped sample stage with cylindrical mounting legs at the bottom. The material is aluminum. The platform diameter is 12.5 mm and the height is 3 mm. The leg length diameter is 2 mm and the height is 8 mm.

4. A device for the compressive mechanical properties and real-time observation of metal microcolumns according to claim 1, characterized in that: The range of the force sensing controller is 1 N. The minimum accuracy of the sensor is 1 mN. The response frequency of the sensor is 300 Hz.

5. A device for the compression mechanical properties and real-time observation of metal micro-columns according to claim 1, characterized in that: The tabletop size of the uniaxial displacement platform is 40 40 mm, the material is aluminum, the minimum scale is 0.01 mm, the accuracy is 0.02 mm, the parallelism is 0.02 mm, the mass is 0.17 kg, and the displacement is adjusted by rotating the differential head.

6. The device for the compression mechanical properties and real-time observation of metal microcolumns according to claim 1, wherein: The tabletop size of the double-axis displacement platform is 40 40 mm, the stroke is ±6.5 mm, the maximum load is 95.2 N, the minimum scale is 0.01 mm, the accuracy is 0.005 mm, the parallelism is 0.005 mm, the mass is 0.46 kg, and the displacement in two directions is adjusted by rotating two micrometer heads.

7. A device for the compression mechanical properties and real-time observation of metal micro-columns according to claim 1, characterized in that: The maximum stroke of the mechanical driver is 12 mm, and the minimum displacement increment is 2 nm.

8. A device for the compression mechanical properties and real-time observation of metal micro-columns according to claim 1, characterized in that: The pressure detection probe uses a tungsten steel tip needle. The needle body diameter is 0.7 mm, the tip diameter is 0.02 mm, and the total length is 17 mm.

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