8Cr4Mo4V钢激光冲击残余应力的演化仿真及其对疲劳性能的影响
Simulation of Residual Stress Evolution of 8Cr4Mo4V Steel Induced by Laser Shock and Its Influence on Fatigue Performance
8Cr4Mo4V钢激光冲击残余应力的演化仿真及其对疲劳性能的影响 |
| 孙玉凤, 刘伟军, 张宏伟, 苏勇, 魏英华, 刘贵胜, 于兴福 |
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Simulation of Residual Stress Evolution of 8Cr4Mo4V Steel Induced by Laser Shock and Its Influence on Fatigue Performance |
| SUN Yufeng, LIU Weijun, ZHANG Hongwei, SU Yong, WEI Yinghua, LIU Guisheng, YU Xingfu |
| 图10 未经激光冲击强化和经激光冲击强化且去除不同深度表面损伤层8Cr4Mo4V钢的旋转弯曲疲劳断口形貌 |
| Fig.10 Rotating bending fatigue fracture morphology of 8Cr4Mo4V steel before LSP and after LSP with different thicknesses of damaged layers removed (a1~a3) without LSP; (b1~b3) surface removal of 25 μm after LSP; (c1~c3) surface removal of 50 μm after LSP; (d1~d3) surface removal of 75 μm after LSP; (a1~d1) macroscopic fracture morphology; (a2~d2) crack initiation zone; (a3~d3) crack propagation zone |
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