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

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11 激光冲击强化使碳化物碎化和促进二次析出的示意图

Fig.11 Schematic diagram of LSP leading to carbide fragmentation and promoting secondary precipitation process of 8Cr4Mo4V steel in different states (a) no LSP; (b) formation of dislocation slip bands; (c) carbide fragmentation after LSP; (d) carbide precipitation on sub-surface after LSP