A high-entropy alloy laser shock peening device

Abstract

This invention discloses a laser shock heat treatment device for high-entropy alloys, comprising a laser generating module, a multi-stage detachable connector module, an environmental control chamber, and a dynamic focusing system. The laser generating module contains a dynamic focusing system, and its optical path also includes the multi-stage detachable connector module. The laser generating module, through the cooperation of the dynamic focusing system and the multi-stage detachable connector module, performs heat treatment on high-entropy alloy workpieces placed in the environmental control chamber. By adjusting the settings of each module, this invention allows for quick replacement of the multi-stage detachable connector module, control of the laser spot by the dynamic focusing system, and regulation of the working environment by the environmental control chamber. This enables adaptation to different focal length lens groups, meeting the uniform processing requirements of complex curved surface workpieces. It solves the problems of single function and insufficient precision in high-entropy alloy heat treatment microstructure control in traditional equipment, and is suitable for the synergistic treatment of impact strengthening and phase transformation of high-entropy alloy components.

Description

Technical Field

[0001] This utility model belongs to the field of high-entropy alloy material processing and surface modification technology, specifically relating to a high-entropy alloy laser shock heat treatment device. Background Technology

[0002] High-entropy alloys, as a type of multi-principal-element alloy material, have shown great application potential in high-end manufacturing fields such as aerospace and nuclear energy equipment due to their unique lattice distortion effect, excellent high-temperature resistance, corrosion resistance, and mechanical properties. However, the as-cast microstructure of high-entropy alloys often suffers from defects such as coarse dendrites, compositional segregation, and porosity, requiring heat treatment and surface strengthening processes to improve their microstructure and properties.

[0003] Currently, the processing technology for high-entropy alloys still faces many technical bottlenecks. For example, the traditional separation of heat treatment and surface strengthening functions means that existing technologies often employ a step-by-step process, first performing heat treatment in a vacuum furnace or induction heating, and then using laser shock blasting equipment for surface modification. This separate process results in high energy consumption, long process cycles, and difficulty in achieving the synergistic effect of microstructure refinement and phase transformation control. In addition, traditional laser shock blasting equipment is mostly designed for titanium and aluminum alloys and lacks optimization for the multi-principal-element diffusion characteristics of high-entropy alloys. In existing processes, the laser energy utilization rate is generally less than 40%, and there is a lack of waste heat recovery mechanisms. High-entropy alloys are prone to cracking due to thermal stress during laser treatment. Therefore, it is necessary to provide a laser shock blasting heat treatment device for high-entropy alloys to solve the above problems. Utility Model Content

[0004] This invention addresses the challenges of traditional equipment in achieving coordinated control of shock wave-induced plastic deformation and dynamic recrystallization, the difficulty in matching laser parameters with the timing of heat treatment in multi-principal element systems of high-entropy alloys, and the issue of microstructure and property fluctuations caused by uneven surface energy distribution. To address these challenges, a high-entropy alloy laser shock heat treatment device is proposed, comprising: a laser head, a dynamic focusing system, a multi-stage detachable connector module, an environmental control chamber, cooling water pipes, a retractable column, a laser, a cooling water tank, a device base, a workpiece, and a copper nozzle on the laser head. The dynamic focusing system is fixedly installed inside the laser head. The multi-stage detachable connector module is movably connected to the outside of the laser head. The multi-stage detachable connector module is movably connected to the retractable column, where the laser and cooling water tank are fixedly placed and stacked. The laser head is movably connected to the copper nozzle, from which a laser beam is emitted through the transparent environmental control chamber. An electric XY moving platform is fixedly placed inside the environmental control chamber, and the workpiece is movably placed on the electric XY moving platform.

[0005] Furthermore, the dynamic focusing system includes: an X-axis reflecting mirror rotation motor, an X-axis reflecting mirror connecting rod, an X-axis reflecting mirror, a Y-axis reflecting mirror rotation motor, a Y-axis reflecting mirror connecting rod, and a Y-axis reflecting mirror; the incident light beam entering the dynamic focusing system passes through the X-axis reflecting mirror and the Y-axis reflecting mirror, causing an emitted light beam to be emitted externally. The X-axis reflecting mirror is fixedly connected to the X-axis reflecting mirror rotation motor via the X-axis reflecting mirror connecting rod, and the Y-axis reflecting mirror is fixedly connected to the Y-axis reflecting mirror rotation motor via the Y-axis reflecting mirror connecting rod.

[0006] Furthermore, the multi-stage detachable connector module includes: a flange, a primary detachable connector, a secondary detachable connector, a tertiary detachable connector, a lens slot for the primary detachable connector, a lens slot for the secondary detachable connector, a lens slot for the tertiary detachable connector, a sealing ring for the primary detachable connector, a sealing ring for the secondary detachable connector, and a sealing ring for the tertiary detachable connector. The flange is fixedly connected to the primary detachable connector via a screw. The primary detachable connector has a lens slot fixed inside, and it is movably connected to the secondary detachable connector via a thread and a sealing ring. The secondary detachable connector has a lens slot fixed inside, and it is movably connected to the tertiary detachable connector via a thread and a sealing ring. The tertiary detachable connector has a lens slot fixed inside, and it is movably connected to the laser head via a thread and a sealing ring.

[0007] Furthermore, the environmental control chamber includes: a vacuum passage, an electric XY moving platform, and a work platform base; the vacuum passage is fixed on the outer wall of the environmental control chamber, and the electric XY moving platform and the work platform base are fixedly placed inside the environmental control chamber. The workpiece is movably placed above the electric XY moving platform and fixedly placed on the work platform base below.

[0008] Beneficial effects:

[0009] 1. The high-entropy alloy laser shock heat treatment device provided by this utility model effectively solves the technical problems of traditional equipment, such as single function, poor parameter adaptability, and uneven processing of complex curved surfaces, through the innovative integration of modular processing head design, dual-laser collaborative control, and multi-environment control system. The device adopts a detachable processing head and quick-change lens assembly structure, realizing rapid switching of focal length optical path. Through pulse-continuous laser time-division output, it achieves synchronous control of shock strengthening and dynamic recrystallization on high-entropy alloys, shortening the process cycle to 40% of the traditional step-by-step process.

[0010] 2. This utility model's environmental control module innovatively integrates vacuum, inert gas protection, and gradient oxygen concentration regulation functions, reducing the crack initiation rate of high-entropy alloys while improving waste heat conversion efficiency. Tested on turbine blade samples in the aerospace field, the device improves component fatigue life and reduces overall energy consumption while maintaining dimensional accuracy, providing efficient and reliable equipment support for the engineering application of high-entropy alloys in extreme environments. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0012] Figure 2 This is a schematic diagram of the dynamic focusing system structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the multi-level detachable connector module structure of this utility model;

[0014] Figure label:

[0015] Laser head 1; Dynamic focusing system 2; X-axis reflector rotation motor 201; X-axis reflector connecting rod 202; X-axis reflector 203; Y-axis reflector rotation motor 204; Y-axis reflector connecting rod 205; Y-axis reflector 206; Incident beam 207; Emitted beam 208; Multi-stage detachable connector module 3; Flange 301; First-stage detachable connector 302; Second-stage detachable connector 303; Third-stage detachable connector 304; First-stage detachable connector Lens slot 305; Secondary detachable connector lens slot 306; Tertiary detachable connector lens slot 307; Primary detachable connector sealing ring 308; Secondary detachable connector sealing ring 309; Tertiary detachable connector sealing ring 310; Environmental control chamber 4; Vacuum passage 401; Electric XY moving platform 402; Work platform base 403; Cooling water pipe 5; Telescopic column 6; Laser 7; Cooling water tank 8; Device base 9; Workpiece 10; Laser head copper nozzle 11. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the present invention.

[0018] As attached Figure 1 To be continued Figure 3 As shown:

[0019] The high-entropy alloy laser shock heat treatment apparatus according to an embodiment of the present invention will now be described with reference to the accompanying drawings. Figures 1 to 3 As shown, the high-entropy alloy laser shock heat treatment device includes a laser head 1, a dynamic focusing system 2, a multi-stage detachable connector module 3, and an environmental control cabin 4. The laser head 1 is equipped with a continuous laser 7 that supports pulse mode and a cooling water tank 8 connected by a cooling pipe 5. The laser 7 and the cooling water tank 8 are integrated and placed behind the telescopic column 6, on the device base 9, which improves the heat exchange efficiency of the laser 7 and reduces the overall energy consumption. The telescopic column 6 has built-in optical fiber, which is externally connected to the flange 301 by a nut. The flange 301 is fixedly connected to the first-stage detachable connector 302 by a screw. The first-stage detachable connector 302 is connected to the second-stage detachable connector 303 by a thread, and the second-stage detachable connector 303 is connected to the third-stage detachable connector 304 by a thread. This enables rapid switching of the laser focal length and optical path. The beam emitted by the copper nozzle 11 of the laser head passes through the transparent environmental control chamber 4 to perform high-temperature heat treatment on the workpiece 10. The environmental control module innovatively integrates vacuum, inert gas protection and gradient oxygen concentration regulation functions, which reduces the crack initiation rate of high-entropy alloys and improves waste heat conversion efficiency.

[0020] Preferably, the laser 7 and the cooling water tank 8 are fixedly placed behind the retractable column 6, and the laser 7 and the cooling water tank 8 are integrated and movable.

[0021] Preferably, the vacuum passage 401 is fixed on the outer wall of the environmental control chamber 4. The electric XY moving platform 402 and the work platform base 403 are fixedly placed inside the environmental control chamber (4). The workpiece 10 is placed on the electric XY moving platform (402) above and fixedly placed on the work platform base 403 below.

[0022] In a specific embodiment: the dynamic focusing system 2 realizes the change of the spot size of the incident beam 207. After the incident beam 207 passes through the high-frequency coordinated motion X-axis reflecting mirror 203 and Y-axis reflecting mirror 206, the spot size of the final emitted beam 208 changes, which improves the coverage of complex curved surfaces, shortens the processing time of a single piece, and reduces the laser energy waste rate.

[0023] Preferably, the X-axis reflecting mirror 203 is fixedly connected to the X-axis reflecting mirror rotation motor 201 via the X-axis reflecting mirror connecting rod 202, and the Y-axis reflecting mirror 206 is fixedly connected to the Y-axis reflecting mirror rotation motor 204 via the Y-axis reflecting mirror connecting rod 205.

[0024] In a specific embodiment: the first-stage detachable connector 302 in the multi-stage detachable connector module 3 is fixedly connected to the flange 301 by a screw. The first-stage detachable connector 302 has a slot for a first-stage detachable connector lens 305 fixed inside, and is movably connected to the second-stage detachable connector 303 via threads and a first-stage detachable connector sealing ring 308. The second-stage detachable connector 303 has a slot for a second-stage detachable connector lens 306 fixed inside, and is movably connected to the third-stage detachable connector 304 via threads and a second-stage detachable connector sealing ring 309. The third-stage detachable connector 304 has a slot for a third-stage detachable connector lens 307 fixed inside, and is movably connected to the laser head 1 via threads and a third-stage detachable connector sealing ring 310. This multi-stage detachable connector module design enables rapid switching of the laser focal length optical path.

[0025] Working Principle: During operation, the high-entropy alloy workpiece 10 is placed on the electric XY moving platform 402. Gas is extracted from the environmental control chamber 4 through the vacuum passage 401, achieving gradient oxygen concentration environmental control and precisely regulating the growth of the surface oxide layer. The integrated laser 7 and cooling water tank 8 are activated, and the height of the telescopic column 6 is adjusted to the optimal height. Modularly designed optical components and a rapid cooling system achieve efficient energy management. The multi-level detachable connector module 3 allows for rapid adjustment and disassembly of the optical connector module, enabling quick switching of the laser focal length and optical path. The dynamic focusing system 2 changes the spot size of the incident beam 207 through high-speed coordinated deflection of the reflector group. The incident beam 207, after passing through the high-frequency coordinated motion of the X-axis reflector 203 and Y-axis reflector 206, achieves adaptive adjustment of the final emitted beam 208's spot shape and size, resulting in improved coverage of complex curved surfaces, shortened single-piece processing time, and reduced laser energy waste. Ultimately, through the coordination of all modules, the high-entropy alloy is processed efficiently and uniformly, balancing improved microstructure and performance with process stability.

Claims

1. A high-entropy alloy laser shock peening apparatus, comprising: The laser head (1), dynamic focusing system (2), multi-level detachable connector module (3), environmental control cabin (4), cooling water pipe (5), telescopic column (6), laser (7), cooling water tank (8), device base (9), workpiece (10) and laser head copper nozzle (11) are characterized in that: the laser head (1) contains a dynamic focusing system (2) inside, and is externally connected to a multi-level detachable connector module (3). The multi-level detachable connector module (3) is externally connected to a telescopic column (6) and the laser (7) and cooling water tank (8) are fixedly placed behind it. The laser head (1) is externally connected to a laser head copper nozzle (11). The laser beam emitted from the laser head copper nozzle (11) passes through the transparent environmental control cabin (4). An electric XY moving platform (402) is fixedly placed inside the environmental control cabin (4). The electric XY moving platform (402) is externally placed on the workpiece (10).

2. The high-entropy alloy laser shock peening apparatus of claim 1, wherein: The dynamic focusing system (2) includes: an X-axis reflector rotating motor (201), an X-axis reflector connecting rod (202), an X-axis reflector (203), a Y-axis reflector rotating motor (204), a Y-axis reflector connecting rod (205), and a Y-axis reflector (206); the incident beam (207) entering the dynamic focusing system (2) passes through the X-axis reflector (203) and the Y-axis reflector (206) to make the emitted beam (208) be emitted from the outside. The X-axis reflector (203) is fixedly connected to the X-axis reflector rotating motor (201) through the X-axis reflector connecting rod (202), and the Y-axis reflector (206) is fixedly connected to the Y-axis reflector rotating motor (204) through the Y-axis reflector connecting rod (205).

3. The high-entropy alloy laser shock peening apparatus of claim 1, wherein: The multi-stage detachable connector module (3) includes: a flange (301), a primary detachable connector (302), a secondary detachable connector (303), a tertiary detachable connector (304), a primary detachable connector lens slot (305), a secondary detachable connector lens slot (306), a tertiary detachable connector lens slot (307), a primary detachable connector sealing ring (308), a secondary detachable connector sealing ring (309), and a tertiary detachable connector sealing ring (310); the flange (301) and the primary detachable connector (302) are fixedly connected by screws, and the primary detachable connector (304)... 2) The first-level detachable connector lens slot (305) is fixed inside, and is connected to the second-level detachable connector (303) by means of thread and the first-level detachable connector sealing ring (308). The second-level detachable connector (303) has a second-level detachable connector lens slot (306) fixed inside, and is connected to the third-level detachable connector (304) by means of thread and the second-level detachable connector sealing ring (309). The third-level detachable connector (304) has a third-level detachable connector lens slot (307) fixed inside, and is connected to the laser head (1) by means of thread and the third-level detachable connector sealing ring (310).

4. The high-entropy alloy laser shock peening apparatus of claim 1, wherein: The environmental control chamber (4) includes: a vacuum passage (401), an electric XY moving platform (402), and a work platform base (403); the vacuum passage (401) is fixed on the outer wall of the environmental control chamber (4), and the electric XY moving platform (402) and the work platform base (403) are fixedly placed inside the environmental control chamber (4). The workpiece (10) is placed on the electric XY moving platform (402) and fixedly placed on the work platform base (403) below.

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