High-throughput testing method for mechanical properties of materials under high speed and high temperature

Abstract

The present invention discloses a high-throughput testing method for the mechanical properties of materials under high speed and high temperature. The rotation speed and size of the centrifuge, the size and weight of the test sample, the centrifugal stress and other parameters are determined, and a temperature-controlled thermocouple and a strain gauge are installed on the gauge section of the test sample. The temperature control system controls the operation of the induction heating system and the circulating water cooling system to apply a temperature load to the test sample. The main shaft of the centrifuge is started to rotate and the speed reaches the rotation speed, which remains unchanged until the test sample is broken. Data is collected in real time through the temperature-controlled thermocouple and strain gauge, and finally the centrifuge is closed and air-cooled to room temperature. The present invention will provide a method for testing the mechanical properties of a material under multiple conditions at the same time, which greatly improves the efficiency of material performance testing and greatly facilitates comparative testing of the mechanical properties of different materials under the same test conditions.

Description

Technical Field

[0001] The present invention relates to a material performance testing method in the field of metal material mechanical performance testing, and in particular to a high-throughput testing method for the mechanical performance of metal materials under high speed and high temperature. Background Art

[0002] National standards GB / T 38822-2020 "Metallic materials creep-fatigue test methods" and GB / T6825.1-2008 "Testing of static uniaxial testing machines Part 1: Inspection and calibration of force measuring systems of tension and (or) compression testing machines" both specify the test methods for the mechanical properties of metal materials. On the one hand, the test environment specified in these standards is 1G (G = 9.8m / s 2 ), which can meet the research needs of the mechanical properties of metal materials themselves. On the other hand, these test standards can only test the mechanical properties of materials under one condition at a time, resulting in low test efficiency and high cost. However, with the implementation of the Materials Genome Project and the Two-Machine Special Project, as well as the urgency of the research and development tasks of key components of power systems such as turbine propulsion systems, such as aircraft engines, aerospace engines, industrial and ship gas turbines, and automotive and train turbochargers, such as compressor blades, fan blades, and turbine blades, the materials of these system components are in a high-speed rotation state during normal operation, that is, the service environment is usually a centrifugal hypergravity environment. Summary of the Invention

[0003] In response to the current deficiencies in static mechanical property testing of metal materials under 1G, the current lack of in-situ heating devices and intelligent temperature control technologies suitable for the mechanical property testing of metal materials under high speed and high temperature, and the urgent need for high-throughput mechanical property testing of metal materials in the research and development of new materials, the present invention provides a high-throughput mechanical property testing method for metal materials under high speed and high temperature, which solves the current problems of low efficiency and high cost of mechanical property testing of metal materials. It is a device that can apply in-situ heating to metal materials under high-speed rotation environment, as well as intelligent temperature control, and a high-throughput testing method for the mechanical properties of metal materials.

[0004] The in-situ heating of metal materials under high-speed rotation environment described in the present invention means that during the mechanical property test of metal materials or components, the high-speed rotating test materials or components are always in an in-situ heating state until the test is completed.

[0005] The high temperature mentioned in the present invention means that the heating temperature applied to the specified area of ​​the sample during the experiment is not less than 500°C, and the duration of the in-situ heating is not less than the test time.

[0006] The high speed mentioned in the present invention means that the maximum speed of the centrifuge during the experiment is not less than 5000 rpm.

[0007] The high throughput described in the present invention means that in a single experiment, the material is tested (1) at no less than 10 stress states under the same temperature conditions; (2) at no less than 5 temperatures under the condition that the stress gradient remains unchanged.

[0008] The technical solution adopted in the present invention is:

[0009] Step 1: Determine the spindle speed and wheel radius of the centrifuge according to experimental conditions;

[0010] Step 2: Determine the size and weight of the mass block in the test specimen, the size and geometric center of the gauge length segment;

[0011] Step 3: Determine the test temperature and the centrifugal stress applied at the geometric center of the gauge length section, and then determine the speed corresponding to the centrifugal stress at the geometric center of the gauge length section;

[0012] Step 4: Install the test specimen in the slot of the sample chuck and determine the distance between the geometric center of the gauge section and the center of the centrifuge spindle;

[0013] Step 5: Fix the temperature-controlled thermocouple at the geometric center of the gauge section of the test specimen;

[0014] Fix the strain gauge at the geometric center of the gauge section of the test specimen and connect the strain gauge to the data acquisition module via the strain gauge extension wire;

[0015] Step 6: Start the induction heating system, circulating water cooling system and temperature control system, and apply temperature load to the test sample by controlling the induction heating system and circulating water cooling system through the temperature control system;

[0016] Step 7: When the temperature reaches the set temperature, start the centrifuge and make the main shaft of the centrifuge rotate and the speed reaches the set speed condition;

[0017] Step 8: Keep the temperature and speed constant until the test specimen is broken;

[0018] From the time the centrifuge spindle starts rotating until the test specimen is pulled apart and broken, temperature and stress change data are collected in real time through temperature-controlled thermocouples and strain gauges. This data is used as high-throughput test data to obtain the temperature-time and strain-time curves during the high-throughput mechanical property testing of the material.

[0019] Step 9: After the test specimen is broken, turn off the induction heating system and temperature control system, power off the centrifuge, and air cool the test specimen to room temperature.

[0020] In the sixth step, the induction heating system is started to apply a temperature load to the test sample, specifically applying a constant and uniform temperature field according to the uniform temperature heating mode, applying a periodically changing alternating temperature field according to the periodically changing alternating temperature heating mode, and applying a fixed range and gradient temperature field according to the temperature gradient heating mode.

[0021] In the seventh step, the centrifuge is started to rotate the main shaft of the centrifuge, specifically to adjust the rotation speed so that different centrifugal tensile stresses are applied to different positions of the test sample along the direction of the centrifugal force, or constant stress σi loads are applied to different positions of the test sample along the direction of the centrifugal force.

[0022] In the seventh step, the centrifuge is started, and the main shaft of the centrifuge is rotated and the speed reaches a fixed speed corresponding to the centrifugal stress.

[0023] The method adopts a high-throughput testing device, which includes a sample chuck, an induction heating system, a circulating water cooling system and a temperature control system; the sample chuck is coaxially installed on the main shaft of a centrifuge and rotates synchronously with the main shaft of the centrifuge, the test sample is installed on the sample chuck, the induction heating system is coaxially installed on the centrifuge and does not rotate with the main shaft of the centrifuge, the induction heating system is connected to the circulating water cooling system, and the temperature control system is respectively connected to the circulating water cooling system and the test sample.

[0024] The sample chuck includes a disc body, a slot and a flange. Flanges are coaxially installed at both ends of the center of the disc body. The disc body is coaxially fixedly connected to the main shaft of the centrifuge through the flange. Multiple slots are opened around the disc body along the circumference. The multiple slots are arranged at intervals along the circumference, and each slot is used to install a test sample.

[0025] The test specimen is in the shape of a strip, and includes a mass block, a rectangular section, a load-bearing section and an assembly tenon connected in sequence. The mass block, the rectangular section, the load-bearing section and the assembly tenon are arranged in sequence along the strip of the test specimen, and the assembly tenon is embedded in the slot of the sample chuck.

[0026] The induction heating system includes an upper induction coil, an upper fixed plate, a lower induction coil and a lower fixed plate; the upper fixed plate and the lower fixed plate are fixedly arranged in parallel with an upper and lower interval, and a sample chuck is arranged in the interval between the upper and lower fixed plates; the annular upper induction coil and the lower induction coil are fixed to the bottom surface of the upper fixed plate and the top surface of the lower fixed plate respectively through the upper induction coil insulation layer and the lower induction coil insulation layer.

[0027] The circulating water cooling system includes a pipeline assembly arranged in the induction heating system, as well as a circulating water inlet pipe, a circulating water outlet pipe, a positive electrode, an inner insulating sleeve, a metal sleeve, a negative electrode, a copper tube, an insulating sleeve, a fixed flange, an insulating sleeve, a tightening round nut, a seal, an electrode insulating sleeve, an external water outlet pipe, an external positive electrode plate, an external water inlet pipe and an external negative electrode plate; the outer sleeve of the copper tube is provided with an insulating sleeve for insulating from the metal sleeve, and the outer sleeve of the insulating sleeve is provided with a metal sleeve; the middle part of the metal sleeve is sealed in the center hole of the fixed flange through the insulating sleeve and the shaft sealing ring, the fixed flange is fixed on the experimental chamber cover of the centrifuge, and the two ends of the copper tube, the insulating sleeve and the metal sleeve are respectively fixed and sealed by the inner insulating sleeve and the seal; one end of the copper tube passes through the inner insulating sleeve and is coaxially connected to the circulating water outlet pipe, and passes through the inner insulating sleeve at one end of the copper tube A positive electrode is provided at the end thereof; an external positive electrode plate is electrically connected to the copper tube through an electrode insulating sleeve, so that the positive electrode is directly electrically connected to the external positive electrode plate through the copper tube; the other end of the copper tube is butted against the external water outlet pipe, so that the circulating water outlet pipe directly flows through the copper tube and the external water outlet pipe; an annular pipe gap is provided between the insulating sleeve and the metal sleeve for use as a water inlet channel, one end of the water inlet channel is connected to the circulating water inlet pipe through a metal pipe, and a negative electrode is provided near the end of the circulating water inlet pipe; an external negative electrode plate is electrically connected to the metal sleeve through a tightening round nut, so that the negative electrode is electrically connected to the external negative electrode plate in sequence through the metal pipe, the metal sleeve, and the external negative electrode plate; a through groove is provided on the wall of the metal sleeve at one end of the connecting seal, and the through groove is fluidly connected to the external water inlet pipe, so that the circulating water inlet pipe passes through the metal pipe, the water inlet channel, the through groove, and the external inlet pipe in sequence;

[0028] The pipeline assembly includes a heating water inlet pipe, a water inlet pipe sealing sleeve, a heating water outlet pipe and a water outlet pipe sealing sleeve; one end of the heating water inlet pipe and the heating water outlet pipe are respectively connected to the circulating water inlet pipe and the circulating water outlet pipe through the water inlet pipe sealing sleeve and the water outlet pipe sealing sleeve, and the other end of the heating water inlet pipe and the heating outlet pipe are respectively connected to the inner cavity environment where the upper induction coil and the lower induction coil are located in the induction heating system, and the inner cavity environment where the upper induction coil and the lower induction coil are located is connected to each other.

[0029] The temperature control system includes a thermocouple, a thermocouple extension line, a high-speed slip ring, a data acquisition module, a data conversion and transmission module, and a high-frequency AC power supply cabinet; thermocouples are fixedly provided on the surface of the test sample corresponding to the upper induction coil and the lower induction coil of the induction heating system, the thermocouples are connected to the data acquisition module via the thermocouple extension line and the high-speed slip ring, the data acquisition module is communicatively connected to the high-frequency AC power supply cabinet via the data conversion and transmission module, and the high-frequency AC power supply cabinet is electrically connected to the external positive electrode plate and the external negative electrode plate of the circulating water cooling system.

[0030] The beneficial effects of the present invention are:

[0031] (1) Conventional laboratory performance tests can only test the mechanical properties of materials under one condition at a time, resulting in low testing efficiency. The present invention provides a method for testing the mechanical properties of a material under multiple conditions at the same time, greatly improving the efficiency of material performance testing.

[0032] (2) Currently, conventional laboratory performance tests can only test the mechanical properties of one material under one condition at a time. The present invention will provide a method for testing the mechanical properties of multiple materials under one condition at a time, which greatly facilitates comparative tests of the mechanical properties of different materials under the same test conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 1 is a schematic structural diagram of a sample chuck 1;

[0034] Figure 2 is a schematic diagram of the structure of test specimen 1.1;

[0035] Figure 3 is a schematic structural diagram of the induction heating system 2;

[0036] Figure 4 It is a structural diagram of the circulating water cooling system 3;

[0037] Figure 5 is a schematic diagram of the temperature control system 4;

[0038] Figure 6 is a schematic diagram of the structure of a test sample 1.1;

[0039] Figure 7 is a schematic diagram of the structure of a test sample 1.1;

[0040] Figure 8 is a schematic diagram of the structure of a test sample 1.1;

[0041] Figure 9 Schematic diagram of the installation of the sample chuck 1 and the induction heating system 2 on the centrifuge;

[0042] Figure 10 It is a process roadmap for the specific implementation of heating;

[0043] Figure 11 It is the process roadmap for the specific implementation of heating II;

[0044] Figure 12 It is the process roadmap for the specific implementation of heating three;

[0045] Figure 13 This is the first type of high-throughput testing scheme for mechanical properties;

[0046] Figure 14 This is a diagram of the second type of high-throughput testing scheme for mechanical properties;

[0047] Figure 15 This is a diagram of the third type of high-throughput testing scheme for mechanical properties.

[0048] In the picture:

[0049] Sample chuck 1: test specimen 1.1, chuck slot 1.2, flange 1.3;

[0050] Mass block 1.1.1, standard section 1.1.2, load-bearing section 1.1.3, assembly tenon 1.1.4;

[0051] Induction heating system 2: upper induction coil 2.1, upper induction coil insulation layer 2.2, upper fixing plate 2.3, upper fixing screw 2.4, lower induction coil 2.5, lower induction coil insulation layer 2.6, lower fixing plate 2.7, lower fixing screw 2.8, connecting rod 2.9, nut 2.10, heating water inlet pipe 2.11, water inlet pipe sealing sleeve 2.12, heating water outlet pipe 2.13, water outlet pipe sealing sleeve 2.14;

[0052] Circulating water cooling system 3: water inlet pipe 3.1, connecting nut 3.2, water outlet pipe 3.3, connecting nut 3.4, positive electrode 3.5, inner insulating sleeve 3.6, negative electrode 3.8, copper tube 3.9, insulating gland 3.10, fixing flange 3.11, fixing screw 3.12, shaft sealing ring 3.13, insulating gland 3.14, tightening round nut 3.15, tightening nut 3.16, insulating element 3.17, sealing element 3.18, electrode insulating gland 3.19, sealing nut 3.20, external water outlet pipe 3.21, external positive electrode plate 3.22, external water inlet pipe 3.23, and external negative electrode plate 3.24;

[0053] Temperature control system 4: thermocouple 4.1, thermocouple extension wire 4.2, high-speed slip ring 4.3, data acquisition module 4.4, control software 4.5, data conversion and transmission module 4.6, high-frequency AC power supply cabinet 4.7. DETAILED DESCRIPTION

[0054] The present invention will be further described below with reference to the accompanying drawings and specific implementations.

[0055] like Figure 9 As shown, a high-throughput testing device is specifically designed and implemented, which includes a sample chuck 1, an induction heating system 2, a circulating water cooling system 3 and a temperature control system 4; the sample chuck 1 is coaxially mounted on the main shaft of the centrifuge and rotates synchronously with the main shaft of the centrifuge, a test specimen 1.1 is mounted on the sample chuck 1, the induction heating system 2 is coaxially mounted on the centrifuge and does not rotate with the main shaft of the centrifuge but remains fixed, the induction heating system 2 is connected to the circulating water cooling system 3, and the temperature control system 4 is respectively connected to the circulating water cooling system 3 and the test specimen 1.1.

[0056] The centrifuge is an ultra-gravity centrifuge.

[0057] like Figure 1 As shown, the sample chuck 1 is used to mount a test specimen and is connected to the centrifuge via a spindle. It comprises a disc body, a slot 1.2, and a flange 1.3. Flanges 1.3 are coaxially fixedly mounted at both ends of the center of the disc body. The disc body is coaxially fixedly connected to the spindle of the centrifuge via the flange 1.3. A plurality of slots 1.2 are circumferentially arranged around the disc body. The plurality of slots 1.2 are spaced apart circumferentially, and each slot 1.2 is used to mount a test specimen 1.1.

[0058] The flange 1.3 is used to connect the sample chuck 1 to the centrifuge main shaft. During the experiment, the high-speed rotation of the centrifuge main shaft drives the sample chuck 1 to rotate, thereby applying a centrifugal load to the test sample 1.1.

[0059] The card slot 1.2 is mainly used to fix the test sample 1.1 that rotates at high speed. The assembly tenon 1.1.4 of the test sample 1.1 is installed in the card slot 1.2, so that the sample chuck 1 drives the test sample 1.1 to rotate together when it rotates.

[0060] like Figure 2 As shown, the test specimen 1.1 is made of metal material for testing performance and is in the shape of a strip, including a mass block 1.1.1, a gauge section 1.1.2, a load-bearing section 1.1.3 and an assembly tenon 1.1.4 connected in sequence. The mass block 1.1.1, the gauge section 1.1.2, the load-bearing section 1.1.3 and the assembly tenon 1.1.4 are all arranged in sequence along the strip of the test specimen 1.1. Specifically, the mass block 1.1.1, the gauge section 1.1.2, the load-bearing section 1.1.3 and the assembly tenon 1.1.4 are arranged in sequence from the slot 1.2 of the sample chuck 1 radially outward, and the assembly tenon 1.1.4 is embedded in the slot 1.2 of the sample chuck 1.

[0061] In the specific implementation, the width of the assembly tenon 1.1.4 and the width of the slot 1.2 of the sample chuck 1 are both larger than the width of the mass block 1.1.1, the standard section 1.1.2 and the load-bearing section 1.1.3, so that the test sample 1.1 can be stably embedded and positioned when driven by the sample chuck 1 to rotate at high speed.

[0062] The mass block 1.1.1 is used to exert a centrifugal stress on the standard moment section 1.1.3 by the centrifugal force generated by its own weight at high speed. The mass block 1.1.1 has a mass m, an effective radius r, and a speed ω. Then the centrifugal force F generated by the mass block 1.1.1 is F = mrω 2 The weight m of the mass 1.1.1 depends on the fracture strength of the material under the experimental conditions.

[0063] Gauge section 1.1.2 is connected to mass block 1.1.1 and is used to bear the centrifugal and thermal stresses exerted by mass block 1.1.1 under high-speed rotation and high temperature. The shape of gauge section 1.1.2 can be changed according to actual needs.

[0064] The load-bearing section 1.1.3 is used to connect the gauge section 1.1.2 and the assembly tenon 1.1.4.

[0065] According to the experimental requirements, the test specimen 1.1 can be designed as follows Figure 2 、 Figure 6-Figure 8 structure.

[0066] One or both of a thermocouple and a strain gauge are arranged at the center of the gauge section 1.1.2 of the test specimen 1.1.

[0067] like Figure 3 As shown, the induction heating system 2 is used to heat a high-speed rotating specimen in situ, applying a temperature load to a designated area of ​​the test specimen 1.1. It comprises an upper induction coil 2.1, an upper fixing plate 2.3, a lower induction coil 2.5, and a lower fixing plate 2.7. The upper and lower fixing plates 2.3 and 2.7 are fixedly arranged parallel to each other with a spacing therebetween. In a specific embodiment, the centrifuge's main shaft rotatably passes through the upper fixing plate 2.3. The sample chuck 1 is positioned in the gap between the upper and lower fixing plates 2.3 and 2.7. The upper and lower fixing plates 2.3 and 2.7 are supported and fixed by a connecting rod 2.9, with a nut 2.10 mounted on the outer end of the connecting rod 2.9. The annular upper and lower induction coils 2.1 and 2.5 are fixed to the bottom and top surfaces of the upper and lower fixing plates 2.3 and 2.7, respectively, via an upper and lower induction coil insulation layer 2.2 and 2.6, respectively.

[0068] The upper fixing plate 2.3 and the lower fixing plate 2.7 are both annular plates, and the upper induction coil 2.1 and the lower induction coil 2.5 are both integrally annular coils.

[0069] Specifically, the upper induction coil 2.1 and the lower induction coil 2.5 are respectively wrapped in the inner cavities of the upper induction coil insulation layer 2.2 and the lower induction coil insulation layer 2.6. The inner cavities of the upper induction coil insulation layer 2.2 and the lower induction coil insulation layer 2.6 are connected by a pipe. The upper induction coil insulation layer 2.2 and the lower induction coil insulation layer 2.6 are fixed to the bottom surface of the upper fixing plate 2.3 and the top surface of the lower fixing plate 2.7 by upper fixing screws 2.4 and lower fixing screws 2.8, respectively.

[0070] Among them, the upper induction coil 2.1 is wrapped inside the upper induction coil insulation layer 2.2 to prevent conductivity and serve as insulation; then the upper induction coil 2.1 with the insulation layer is fixed to the upper fixing plate 2.3 by the upper fixing screw 2.4 to form the upper induction coil; the lower induction coil 2.5 is wrapped inside the lower induction coil insulation layer 2.6, and the lower induction coil 2.5 with the insulation layer is also fixed to the lower fixing plate 2.7 by the lower fixing screw 2.8 to form the lower induction coil; then, the upper fixing plate 2.3 and the lower fixing plate 2.7 are assembled together by the connecting rod 2.9 and the nut 2.10.

[0071] When alternating current is applied, the metal material placed between the upper induction coil 2.1 and the lower induction coil 2.5 generates an induced current I (or eddy current) under the action of the alternating magnetic field. The eddy current generates heat through the conductor with resistance, and heats the metal material through heat conduction. The Joule heat Q generated by the induced current I is equal to I 2 Rt (R is the resistance of the metal material, t is time). During the induction heating process, the heating temperature is controlled by adjusting the AC frequency f, the distance between the sample and the upper induction coil 2.1 and the lower induction coil 2.5, and the heating power.

[0072] like Figure 4 As shown, the circulating water cooling system 3 is used to cool the copper tubes in the upper induction coil 2.1 and the lower induction coil 2.5 in the induction heating system 2. It includes a piping assembly provided in the induction heating system 2, as well as a circulating water inlet pipe 3.1, a circulating water outlet pipe 3.3, a positive electrode 3.5, an inner insulating sleeve 3.6, a metal sleeve 3.7, a negative electrode 3.8, a copper tube 3.9, an insulating gland 3.10, a fixing flange 3.11, an insulating gland 3.14, a compression nut 3.15, a seal 3.18, an electrode insulating gland 3.19, an external outlet pipe 3.21, an external positive electrode plate 3.22, an external water inlet pipe 3.23, and an external negative electrode plate 3.24.

[0073] An insulating sleeve 3.10 and a metal sleeve 3.7 are coaxially mounted on the copper tube 3.9 in sequence radially outward. An insulating sleeve 3.10 is fixedly mounted coaxially on the outside of the copper tube 3.9 for insulation from the metal sleeve 3.7. The metal sleeve 3.7 is coaxially mounted on the outside of the insulating sleeve 3.10, thereby maintaining insulation between the copper tube 3.9 and the metal sleeve 3.7. The middle portion of the metal sleeve 3.7 is sealedly mounted in the center hole of a fixed flange 3.11 via an insulating sleeve 3.14 and a shaft sealing ring 3.13. The fixed flange 3.11 is secured to the experimental chamber cover of the centrifuge via a fixing screw 3.12. The ends of the copper tube 3.9, the insulating sleeve 3.10, and the metal sleeve 3.7 are respectively fixed and sealed by an inner insulating sleeve 3.6 and a sealing member 3.18, which provide insulation and prevent water leakage.

[0074] One end of the copper tube 3.9 passes through the inner insulating sleeve 3.6 and is coaxially connected to the water outlet pipe 3.3. A positive electrode 3.5 is provided at the end of the copper tube 3.9 after passing through the inner insulating sleeve 3.6. The external positive electrode plate 3.22 is electrically connected to the copper tube 3.9 through multiple electrode insulating sleeves 3.19. Specifically, at least two electrode insulating sleeves 3.19 are threaded onto the external threads of the copper tube 3.9, with the external positive electrode plate 3.22 being compressed and installed between two adjacent electrode insulating sleeves 3.19. The external positive electrode plate 3.22 passes through the gap between the two adjacent electrode insulating sleeves 3.19 and maintains electrical connection with the external positive electrode plate 3.22. This allows the positive electrode 3.5 to be directly electrically connected to the external positive electrode plate 3.22 after passing through the copper tube 3.9.

[0075] The other end of the copper tube 3.9 is connected to the external water outlet pipe 3.21 through the sealing nut 3.20, so that the water outlet pipe 3.3 flows directly through the copper tube 3.9 and the external water outlet pipe 3.21;

[0076] There is an annular pipe gap between the insulating sleeve 3.10 and the metal sleeve 3.7, which serves as a water inlet channel. The water inlet channel is connected to the circulating water inlet pipe 3.1 through a metal pipe at one end near the inner insulating sleeve 3.6. The circulating water inlet pipe 3.1 is provided with a negative electrode 3.8 near the end. The external negative electrode plate 3.24 is electrically connected to the metal sleeve 3.7 through a plurality of clamping round nuts 3.15. Specifically, at least two clamping round nuts 3.15 are threaded onto the external threads of the metal sleeve 3.7, wherein the external negative electrode plate 3.24 is clamped and installed between two adjacent clamping round nuts 3.15. The external negative electrode plate 3.24 passes through the gap between the two adjacent clamping round nuts 3.15 and maintains an electrical connection with the external negative electrode plate 3.24. In this way, the negative electrode 3.8 is electrically connected to the external negative electrode plate 3.24 after passing through the metal pipe and the metal sleeve 3.7.

[0077] A through slot is formed in the wall of the metal sleeve 3.7 at one end of the tube, which is connected to the sealing member 3.18 and is disposed between the external positive electrode plate 3.22 and the external negative electrode plate 3.24. The through slot is fluidically connected to the external water inlet pipe 3.23. Specifically, an insulating member 3.17 is mounted on the metal sleeve 3.7 around the through slot via a tightening nut 3.16. The external water inlet pipe 3.23 passes through a through hole in the insulating member 3.17 and is connected to the through slot. In this way, the water inlet pipe 3.1 flows through the metal pipe, the water inlet channel, the through slot, and finally to the external water inlet pipe 3.23.

[0078] More specifically, the copper tube 3.9 is a long hollow copper tube, with an insulating sleeve 3.10 installed on the outer periphery for insulation, and a sealing ring installed to prevent air leakage in the experimental cavity.

[0079] The circulating water inlet pipe 3.1 is connected to the heating water inlet pipe 2.11 of the induction heating system 2 via a connecting nut 3.2; the circulating water outlet pipe 3.3 is connected to the heating water outlet pipe 2.13 of the induction heating system 2 via a connecting nut 3.4; the positive electrode 3.5 is installed on the periphery of the circulating water outlet pipe 3.3 to ensure that the cooling water can cool the positive electrode 3.5; the negative electrode 3.8 is installed on the periphery of the circulating water inlet pipe 3.1 to ensure that the cooling water can cool the negative electrode 3.8.

[0080] The metal sleeve 3.7 is mounted on the chamber cover of the experimental chamber via a flange 3.11 using six fixing screws 3.12. A sealing ring 3.13 is then used to prevent air leakage through the shaft, and an insulating sleeve 3.14 is used for insulation to prevent electrical leakage. An external negative electrode plate 3.24 is fixed to the insulating sleeve 3.14 using three tightening round nuts 3.15. An external water inlet pipe 3.23 is connected to the through-slot of the copper tube 3.9 via a tightening nut 3.16 and an insulating member 3.17. The tightening nut 3.16 facilitates replacement or maintenance of the external water inlet pipe 3.23, and the insulating member 3.17 prevents electrical leakage from the motor. An external positive electrode plate 3.22 is secured to the sealing member 3.18 via an electrode insulating sleeve 3.19. An external water outlet pipe 3.21 is connected to the copper tube of the water outlet pipe 3.3 via a sealing nut 3.20 on the electrode insulating sleeve 3.19.

[0081] The pipeline assembly includes a heating water inlet pipe 2.11, a water inlet pipe sealing sleeve 2.12, a heating water outlet pipe 2.13 and a water outlet pipe sealing sleeve 2.14; one end of the heating water inlet pipe 2.11 and the heating water outlet pipe 2.13 are respectively connected to the circulation water inlet pipe 3.1 and the circulation water outlet pipe 3.3 through the water inlet pipe sealing sleeve 2.12 and the water outlet pipe sealing sleeve 2.14, and the other ends of the heating water inlet pipe 2.11 and the heating water outlet pipe 2.13 are respectively connected to the inner cavity environment of the upper induction coil 2.1 and the lower induction coil 2.5 in the induction heating system 2, and the inner cavity environment of the upper induction coil 2.1 and the lower induction coil 2.5 are connected to each other.

[0082] Specifically, the other end of the heating water inlet pipe 2.11 is connected to the circulating water inlet pipe 3.1 via the water inlet pipe sealing sleeve 2.12, the connecting nut 3.2, and the other end of the heating water outlet pipe 2.13 is connected to the circulating water outlet pipe 3.3 via the water outlet pipe sealing sleeve 2.14, the connecting nut 3.4.

[0083] The external water outlet pipe 3.21 and the external water inlet pipe 3.23 are connected to the water inlet and outlet of the circulating water machine, respectively. In a specific implementation, the external water outlet pipe 3.21 is connected to the water inlet pipe of the circulating water machine, and the external water inlet pipe 3.23 is connected to the water outlet pipe of the circulating water machine, forming a closed circulating water cooling system to cool the induction heating system 2.

[0084] Positive electrode 3.5 and negative electrode 3.8 are electrically connected to upper induction coil 2.1 and lower induction coil 2.5, respectively. External positive electrode plate 3.22 and external negative electrode plate 3.24 are connected to the positive and negative poles of an external power source, respectively. Specifically, external positive electrode plate 3.22 is connected to the positive pole of a high-frequency AC power supply cabinet 4.7, while external negative electrode plate 3.24 is connected to the negative pole of the high-frequency AC power supply cabinet 4.7, forming a closed-loop circuit that provides power to induction heating system 2.

[0085] The inner cavity where the upper induction coil 2.1 is located is connected to the heating water inlet pipe 2.11, which is connected to the circulating water inlet pipe 3.1 of the circulating water cooling system 3 through the water inlet pipe sealing sleeve 2.12; the inner cavity where the lower induction coil 2.5 is located is connected to the heating water outlet pipe 2.13, which is connected to the circulating water outlet pipe 3.3 of the circulating water cooling system 3 through the water outlet pipe sealing sleeve 2.14. The copper tube is cooled by the cooling water provided by the cooling system 3.

[0086] like Figure 5 As shown, the temperature control system 4 is used to ensure that the test sample 1.1 is heated to a predetermined temperature and maintained at this temperature until the end of the experiment by controlling the heating power of the induction power supply. The induction heating system 2 includes a thermocouple 4.1, a thermocouple extension cable 4.2, a high-speed slip ring 4.3, a data acquisition module 4.4, a data conversion and transmission module 4.6, and a high-frequency AC power supply cabinet 4.7. Thermocouples 4.1 are fixedly mounted on the surface of the test sample 1.1 corresponding to the upper induction coil 2.1 and the lower induction coil 2.5 of the induction heating system 2. The thermocouples 4.1 are connected to the data acquisition module 4.4 via the thermocouple extension cable 4.2 and the high-speed slip ring 4.3. The thermocouple extension cable 4.2 passes through the disc body of the sample chuck 1 and the main shaft of the centrifuge and is electrically connected to the high-speed slip ring 4.3. The high-speed slip ring 4.3 is arranged on the main shaft of the centrifuge. The data acquisition module 4.4 is communicatively connected to the high-frequency AC power supply cabinet 4.7 via the data conversion and transmission module 4.6. The high-frequency AC power supply cabinet 4.7 is electrically connected to the circulating water machine and the external positive electrode plate 3.22 and external negative electrode plate 3.24 of the circulating water cooling system 3.

[0087] In the specific implementation, a control software 4.5 is further provided, and the control software 4.5 is connected to the data acquisition module 4.4 and the data conversion and transmission module 4.6 respectively.

[0088] During the experiment, thermocouple 4.1 was welded to the center of the upper induction coil 2.1 and the lower induction coil 2.5, corresponding to the test specimen 1.1. Thermocouple 4.1 was then connected to a high-speed slip ring 4.3 through a thermocouple extension wire 4.2 and the hollow spindle of the centrifuge. Conductive wires then connected the thermocouple 4.1 to a data acquisition module 4.4, control software 4.5, and data conversion and transmission module 4.6. Finally, the control signal line was connected to a high-frequency AC power cabinet 4.7, forming a temperature control system.

[0089] The present invention also designs different specimens to better perform mechanical property tests on the metal materials of the specimens.

[0090] The structure of the first test specimen 1.1 is shown in Figure 2 , for groove specimens and related similar structures;

[0091] The structure of the second test specimen 1.1 is shown in Figure 6 , for flat specimens and related similar structures;

[0092] The structure of the third test specimen 1.1 is shown in Figure 7 , for round bar specimens and related similar structures;

[0093] The structure of the fourth test specimen 1.1 is shown in Figure 8 , structural gradient specimens and their related similar structures.

[0094] In the specific implementation, the following two test specimen 1.1 arrangements are set to achieve high-throughput testing of the mechanical properties of the material:

[0095] The first type: the material type of the test sample 1.1 is the same, and the mass of the mass block 1.1.1 is different;

[0096] The second type: the test samples 1.1 are made of different materials, but the masses of the mass blocks 1.1.1 are the same.

[0097] During the material property testing process, if the first test specimen 1.1 is installed, due to the different masses of the mass block 1.1.1, the centrifugal tensile stress applied to the test specimen 1.1 at the same rotational speed is different, thereby enabling the mechanical properties of a single material to be tested simultaneously under the same temperature and different stresses in a single test. If the second test specimen 1.1 is installed, the material types are different, but the mass of the mass block 1.1.1 is the same. At the same rotational speed, the same centrifugal tensile stress is applied to the test specimens 1.1 of different materials, thereby enabling the mechanical properties of multiple materials to be tested simultaneously under the same temperature and centrifugal tensile stress in a single test.

[0098] The high-throughput testing implementation method of the present invention is as follows:

[0099] Step 1: Determine the spindle speed and wheel radius of the centrifuge according to experimental conditions;

[0100] Step 2: Determine the size and weight of mass 1.1.1, and the size and geometric center of gauge section 1.1.2 in test specimen 1.1;

[0101] Step 3: Determine the test temperature and the centrifugal stress applied at the geometric center of the gauge length section 1.1.2, and then determine the speed corresponding to the centrifugal stress at the geometric center of the gauge length section 1.1.2 through finite element calculation;

[0102] Step 4: Install the test specimen 1.1 in the slot 1.2 of the sample chuck 1 and determine the distance between the geometric center of the gauge section 1.1.2 and the center of the spindle of the centrifuge; one test specimen 1.1 is installed in each slot 1.2 of the sample chuck 1.

[0103] Step 5: Weld and fix a temperature-control thermocouple 4.1 at the geometric center of the gauge length section 1.1.2 of the test specimen 1.1. The temperature-control thermocouple 4.1 is connected to the temperature control system 4 via a temperature extension wire 4.2.

[0104] If strain is to be measured, a strain gauge is also welded and fixed at the geometric center of the gauge length section 1.1.2 of the test specimen 1.1. The strain gauge is connected to the data acquisition module 4.4 via a strain gauge extension lead to implement real-time acquisition of the strain signal.

[0105] Step 6: Start the induction heating system 2, the circulating water cooling system 3 and the temperature control system 4. The temperature control system 4 controls the induction heating system 2 and the circulating water cooling system 3 to apply a temperature load to the test sample 1.1. After the temperature reaches the predetermined temperature, it is kept at this temperature for 30 minutes.

[0106] In the sixth step, the induction heating system 2 is started to apply a temperature load to the test sample 1.1, specifically, a constant and uniform temperature field is applied according to the uniform temperature heating mode, a periodically changing alternating temperature field is applied according to the periodically changing alternating temperature heating mode, and a fixed range of temperature field with a gradually changing gradient is applied according to the temperature gradient heating mode.

[0107] Step 7: Start the centrifuge and rotate the main shaft of the centrifuge until the speed reaches the speed corresponding to the centrifugal stress;

[0108] In the seventh step, the centrifuge is started to rotate the main shaft of the centrifuge, specifically, the rotation speed is adjusted so that different centrifugal tensile stresses are applied to different positions of the test sample 1.1 along the direction of the centrifugal force, or a constant stress σi load is applied to different positions of the test sample 1.1 along the direction of the centrifugal force.

[0109] Step 8: Keep the temperature and rotation speed constant until the test specimen 1.1 is broken;

[0110] From the time the centrifuge spindle starts rotating until the test specimen 1.1 is pulled apart and broken, temperature and stress change data are collected in real time via the temperature-controlled thermocouple 4.1 and the strain gauge as high-throughput test data.

[0111] Step 9: After the test sample 1.1 is broken, the induction heating system 2 and the temperature control system 4 are turned off, the centrifuge is powered off, and the test sample 1.1 is air-cooled to room temperature.

[0112] The specific implementation of the present invention provides a variety of in-situ heating system modes for high-throughput testing in a high-speed environment, providing new experimental conditions for conducting material performance tests under different temperature and speed conditions.

[0113] The heating modes of the present invention include but are not limited to the following:

[0114] Heating mode 1: At high speed, uniform heating mode is applied to the standard torque section 1.1.2 of the test specimen 1.1. Figure 10 .

[0115] The experimental materials are of the same type. During the experiment, the distance h between the standard section 1.1.2 and the upper induction coil 2.1 and the lower induction coil 2.5 remains the same, and the heating power and heating frequency remain unchanged within the time t, applying a constant and uniform temperature field to the standard section 1.1.2.

[0116] Heating mode 2: At high speed, the test specimen 1.1 of the standard torque section 1.1.2 is heated in a periodically changing alternating temperature mode. Figure 11 .

[0117] The experimental materials are of the same type. During the experiment, the distance h between the standard section 1.1.2 and the upper induction coil 2.1 and the lower induction coil 2.5 remains the same, the heating frequency remains unchanged, but the heating power is changed periodically within time t, and an alternating temperature field of T1 is applied to the standard section 1.1.2 within time t1 and T2 within time t2.

[0118] Heating mode 3: A heating mode in which a constant temperature gradient is applied to the standard torque section 1.1.2 of the test specimen 1.1 at a high speed. Figure 12 .

[0119] For the same experimental material type, the standard rectangular section 1.1.2 of test specimen 1.1 was machined into an arc with a radius of R. During the experiment, the distance h between the lowest point of the arc of standard rectangular section 1.1.2 and the upper induction coil 2.1 and lower induction coil 2.5 remained constant, and the heating power and heating frequency remained constant for a period of time t. Because the distance from the arc-shaped standard rectangular section 1.1.2 to the induction coil 2.1 and lower induction coil 2.5 continuously changes, according to the principle of induction heating, under the same power and frequency conditions, the sample heating temperature is inversely proportional to the distance from the induction coil. This results in a constant temperature gradient being applied to the standard rectangular section 1.1.2 of test specimen 1.1.

[0120] Based on the above heating mode, under the conditions of the same experimental material type and the same weight of mass block 1.1.1, the present invention implements high-throughput testing of the mechanical properties of metal materials, including but not limited to the following situations:

[0121] The first type of high throughput test experiment: test sample 1.1 is used Figure 6 The structure shown, according to Figure 13 As shown, when the material mechanical properties test of the test sample 1.1 is carried out under constant speed and constant temperature, the induction heating system is first started, the temperature reaches T and is maintained for t1, and then the centrifuge is started, the speed is increased to a predetermined speed, and is maintained for t2 until the sample breaks. Subsequently, the induction coil and the centrifuge are simultaneously powered off, and the sample is air-cooled to room temperature.

[0122] During the experiment, a constant temperature load is applied to the test sample 1.1, and different centrifugal tensile stresses are applied to different positions of the test sample 1.1 along the direction of the centrifugal force, so that the sample is always under the action of (T, σi) (i refers to the cross-section of the sample corresponding to the distance i from the centrifuge axis, the same below) load under the action of high speed and high temperature. After the experiment, the relationship between the organization and performance of the sample under different (T, σi) loads is analyzed and characterized by means of analysis such as scanning electron microscopy and mechanical property testing methods such as nanoindentation, so as to achieve high-throughput testing of the performance of metal materials under high speed and high temperature, which is used to study the relationship between the organization and performance of materials under constant temperature and different stress states.

[0123] The second type of high throughput test experiment: test sample 1.1 is used Figure 6 The structure shown, according to Figure 14 When testing the material properties of a sample under constant speed-alternating heating, the induction heating system is first started, and the sample is heated to T1 within a time period of t0. Then, the centrifuge is started, the speed is increased to a predetermined speed, and the speed is kept constant. The temperature of the test sample 1.1 is maintained at T1 for t1, and then the temperature control system 4 is used to reduce the temperature of the test sample 1.1 to T2 and maintain it at t2. A periodic alternating heating mode is applied to the test sample 1.1 through the program setting of the temperature control system 4 until the sample breaks. Then, the induction coil and the centrifuge are simultaneously powered off, and the sample is air-cooled to room temperature.

[0124] During the experiment, an alternating temperature load was applied to the test specimen 1.1, and different centrifugal tensile stresses were applied to different positions of the test specimen 1.1 along the direction of the centrifugal force, so that the sample was always under the (Ti, σi) load under high speed and high temperature. After the experiment, the relationship between the organization and performance of the sample under different (Ti, σi) loads was analyzed and characterized through analytical methods such as scanning electron microscopy and mechanical property testing methods such as nanoindentation, thereby achieving high-throughput testing of the performance of metal materials under high speed and high temperature, which was used to study the relationship between the organization and performance of the material under the fixed stress σi and alternating temperature state of the cross section of specimen i.

[0125] The third type of high-throughput testing experiment:

[0126] Make the test sample 1.1 adopt Figure 2 The structure shown, according to Figure 15 By keeping the centrifuge speed constant, a constant stress σi is applied to the cross section of sample i; during the high-speed rotation process, by keeping the heating power and heating frequency of the induction heating system 2 constant, a constant temperature Ti is applied to the cross section of sample i until the sample breaks, and then the induction coil and the centrifuge are simultaneously powered off to allow the sample to air cool to room temperature.

[0127] During the experiment, a constant temperature load Ti and a constant stress σi load were applied to the i cross section of the test specimen 1.1, so that the i cross section of the test specimen 1.1 under high speed and high temperature was always under a constant (Ti, σi) load. After the experiment, the relationship between the organization and performance of the specimen under different (Ti, σi) loads was analyzed and characterized by means of analysis such as scanning electron microscopy and mechanical property testing methods such as nanoindentation, thereby achieving high-throughput testing of the performance of metal materials under high speed and high temperature, which was used to study the relationship between the organization and performance of the material under the state of fixed stress σi and constant temperature Ti in the i cross section of the specimen.

Claims

1. A high-throughput testing method for mechanical properties of materials under high speed and high temperature, characterized by: Step 1: Determine the spindle speed and wheel radius of the centrifuge according to experimental conditions; Step 2: Determine the size and weight of the mass (1.1.1) in the test specimen (1.1), and the size and geometric center of the gauge section (1.1.2); Step 3: Determine the test temperature and the centrifugal stress applied at the geometric center of the gauge length section (1.1.2), and then determine the speed corresponding to the centrifugal stress at the geometric center of the gauge length section (1.1.2); Step 4: Install the test specimen (1.1) in the slot (1.2) of the sample chuck (1) and determine the distance between the geometric center of the gauge section (1.1.2) and the center of the centrifuge spindle; Step 5: Fix the upper temperature-controlled thermocouple (4.1) at the geometric center of the gauge length section (1.1.2) of the test specimen (1.1); Fix a strain gauge at the geometric center of the gauge length section (1.1.2) of the test specimen (1.1) and connect the strain gauge to the data acquisition module (4.4) via a strain gauge extension lead. Step 6: Start the induction heating system (2), the circulating water cooling system (3) and the temperature control system (4), and apply a temperature load to the test specimen (1.1) by controlling the induction heating system (2) and the circulating water cooling system (3) through the temperature control system (4); Step 7: When the temperature reaches the set temperature, start the centrifuge and make the main shaft of the centrifuge rotate and the speed reaches the set speed condition; Step 8: Keep the temperature and rotation speed constant until the test specimen (1.1) is broken; During the period from the start of the centrifuge spindle rotation to the breaking of the test specimen (1.1), the temperature change and stress change data are collected in real time by using the temperature-controlled thermocouple (4.1) and the strain gauge. The data are used as high-throughput test data to obtain the temperature-time and strain-time curves during the high-throughput mechanical property test of the material. Step 9: After the test specimen (1.1) is pulled apart and broken, the induction heating system (2) and the temperature control system (4) are turned off, the centrifuge is powered off, and the test specimen (1.1) is air-cooled to room temperature; The method adopts a high-throughput testing device, which includes a sample chuck (1), an induction heating system (2), a circulating water cooling system (3) and a temperature control system (4); the sample chuck (1) is coaxially mounted on the main shaft of the centrifuge and rotates synchronously with the main shaft of the centrifuge, the test sample (1.1) is mounted on the sample chuck (1), the induction heating system (2) is coaxially mounted on the centrifuge and does not rotate with the main shaft of the centrifuge, the induction heating system (2) is connected to the circulating water cooling system (3), and the temperature control system (4) is respectively connected to the circulating water cooling system (3) and the test sample (1.1); The circulating water cooling system (3) includes a pipe assembly arranged in the induction heating system (2) and a circulating water inlet pipe (3.1), a circulating water outlet pipe (3.3), a positive electrode (3.5), an inner insulating sleeve (3.6), a metal sleeve (3.7), a negative electrode (3.8), a copper tube (3.9), a first insulating sleeve (3.10), a fixing flange (3.11), a second insulating sleeve (3.14), a tightening round nut (3.15), a sealing member (3.18), an electrode insulating sleeve (3.19), an external water outlet pipe (3.21), an external positive electrode plate (3.22), an external water inlet pipe (3.23) and an external negative electrode plate (3.24); the copper tube (3 .9) is provided with a first insulating sleeve (3.10) for insulation from the metal sleeve (3.7), and the first insulating sleeve (3.10) is provided with a metal sleeve (3.7) on the outside; the middle of the metal sleeve (3.7) is sealed and sleeved in the center hole of the fixed flange (3.11) through the second insulating sleeve (3.14) and the shaft sealing ring (3.13); the fixed flange (3.11) is fixed on the experimental chamber cover of the centrifuge, and the two ends of the copper tube (3.9), the first insulating sleeve (3.10) and the metal sleeve (3.7) are fixed and sealed respectively through the inner insulating sleeve (3.6) and the sealing member (3.18); one end of the copper tube (3.9) passes through the inner insulating sleeve (3.6) and flows out The water pipes (3.3) are coaxially butted, and a positive electrode (3.5) is provided at the end of the copper pipe (3.9) after passing through the inner insulating sleeve (3.6); the external positive electrode plate (3.22) is electrically connected to the copper pipe (3.9) through the electrode insulating sleeve (3.19), so that the positive electrode (3.5) is directly electrically connected to the external positive electrode plate (3.22) after passing through the copper pipe (3.9); the other end of the copper pipe (3.9) is butted against the external water outlet pipe (3.21), so that the water outlet pipe (3.3) is directly circulated through the copper pipe (3.9) and the external water outlet pipe (3.21); an annular pipe gap is provided between the first insulating sleeve (3.10) and the metal sleeve (3.7) for serving as a water inlet channel. One end of the water channel is connected to the circulating water inlet pipe (3.1) via a metal pipe, and a negative electrode (3.8) is provided near the end of the circulating water inlet pipe (3.1); the external negative electrode plate (3.24) is electrically connected to the metal sleeve (3.7) via a compression nut (3.15), so that the negative electrode (3.8) is sequentially connected to the external negative electrode plate (3.24) through the metal pipe and the metal sleeve (3.7); the metal sleeve (3.7) is provided with a through groove on the wall of one end of the connecting seal (3.18), and the through groove is connected to the external water inlet pipe (3.23) in a flow manner, so that the circulating water inlet pipe (3.1) is sequentially connected to the metal pipe, the water inlet channel, the through groove, and the external water inlet pipe (3.23); The pipeline assembly comprises a heating water inlet pipe (2.11), a water inlet pipe sealing sleeve (2.12), a heating water outlet pipe (2.13) and a water outlet pipe sealing sleeve (2.14); one end of the heating water inlet pipe (2.11) and the heating water outlet pipe (2.13) are connected to the circulation water inlet pipe (3.1) and the circulation water outlet pipe (3.3) respectively through the water inlet pipe sealing sleeve (2.12) and the water outlet pipe sealing sleeve (2.14); the other ends of the heating water inlet pipe (2.11) and the heating water outlet pipe (2.13) are respectively connected to the inner cavity environment where the upper induction coil (2.1) and the lower induction coil (2.5) in the induction heating system (2) are located, and the inner cavity environments where the upper induction coil (2.1) and the lower induction coil (2.5) are located are connected to each other.

2. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: In the sixth step, the induction heating system (2) is started to apply a temperature load to the test specimen (1.1), specifically, applying a constant and uniform temperature field according to the uniform temperature heating mode, applying a periodically changing alternating temperature field according to the periodically changing alternating temperature heating mode, and applying a fixed range and gradient temperature field according to the temperature gradient heating mode.

3. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: In the seventh step, the centrifuge is started to rotate the main shaft of the centrifuge, specifically to adjust the rotation speed so that different centrifugal tensile stresses are applied to different positions of the test specimen (1.1) along the direction of the centrifugal force, or a constant stress σi load is applied to different positions of the test specimen (1.1) along the direction of the centrifugal force.

4. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: In the seventh step, the centrifuge is started, and the main shaft of the centrifuge is rotated and the speed reaches a fixed speed corresponding to the centrifugal stress.

5. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 4, characterized in that: The sample chuck (1) comprises a chuck body, a slot (1.2) and a flange (1.3), wherein flanges (1.3) are coaxially mounted at both ends of the center of the chuck body, the chuck body is coaxially fixedly connected to the main shaft of the centrifuge via the flange (1.3), a plurality of slots (1.2) are circumferentially arranged around the chuck body, the plurality of slots (1.2) are circumferentially spaced, and each slot (1.2) is used to mount a test sample (1.1).

6. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: The test specimen (1.1) is in the shape of a strip and comprises a mass block (1.1.1), a rectangular section (1.1.2), a load-bearing section (1.1.3) and an assembly tenon (1.1.4) connected in sequence. The mass block (1.1.1), the rectangular section (1.1.2), the load-bearing section (1.1.3) and the assembly tenon (1.1.4) are all arranged in sequence along the strip of the test specimen (1.1), and the assembly tenon (1.1.4) is embedded in the slot (1.2) of the sample chuck (1).

7. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: The induction heating system (2) comprises an upper induction coil (2.1), an upper fixed plate (2.3), a lower induction coil (2.5) and a lower fixed plate (2.7); the upper fixed plate (2.3) and the lower fixed plate (2.7) are fixedly arranged in parallel with each other at intervals above and below, and a sample chuck (1) is arranged in the interval between the upper fixed plate (2.3) and the lower fixed plate (2.7); the annular upper induction coil (2.1) and the lower induction coil (2.5) are fixed to the bottom surface of the upper fixed plate (2.3) and the top surface of the lower fixed plate (2.7) through an upper induction coil insulation layer (2.2) and a lower induction coil insulation layer (2.6), respectively.

8. The high-throughput testing method for mechanical properties of materials under high speed and high temperature according to claim 1, characterized in that: The temperature control system (4) includes a thermocouple (4.1), a thermocouple extension line (4.2), a high-speed slip ring (4.3), a data acquisition module (4.4), a data conversion and transmission module (4.6), and a high-frequency AC power supply cabinet (4.7); thermocouples (4.1) are fixedly provided on the surface of the test sample (1.1) corresponding to the upper induction coil (2.1) and the lower induction coil (2.5) of the induction heating system (2); the thermocouples (4.1) are connected to the data acquisition module (4.4) via the thermocouple extension line (4.2), the high-speed slip ring (4.3), and the data acquisition module (4.4); the data acquisition module (4.4) is communicatively connected to the high-frequency AC power supply cabinet (4.7) via the data conversion and transmission module (4.6), and the high-frequency AC power supply cabinet (4.7) is electrically connected to the external positive electrode plate (3.22) and the external negative electrode plate (3.24) of the circulating water cooling system (3).

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