... 残余压力 residual pressure; 残余压应力 residual compressive stress; 残余氧化皮层 drawn-in scale; ...
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Surface residual stress testing and the micro-hardness measurement results suggest that: laser shock can induce significant residual compressive stress on material surface, and the micro-hardness can be also increased a lot.
表面残余应力测试和显微硬度测量结果表明:激光冲击可在金属材料表面产生明显的残余压应力,材料表面硬度也有较大提高。
参考来源 - 金属材料在强激光超高应变率作用下的微观组织响应The results show that ultrasonic shot peening process can increase the residual compression stress on metal sample surface greatly with little increase of surface roughness value.
结果显示,超声喷丸强化工艺可以极大提高金属试件表层的残余压应力,而仅会导致表面粗糙度参数的微小升高,但同时会使表面粗糙度状况更趋均匀。
参考来源 - 超声喷丸强化机理的研究Surface residual stress testing and the micro-hardness measurement results suggest that: laser shock can induce significant residual compressive stress on material surface, and the micro-hardness can be also increased a lot.
表面残余应力测试和显微硬度测量结果表明:激光冲击可在金属材料表面产生明显的残余压应力,材料表面硬度也有较大提高。
参考来源 - 金属材料在强激光超高应变率作用下的微观组织响应·2,447,543篇论文数据，部分数据来源于NoteExpress
残余压应力作用在塑性变形层内。
但其最大残余压应力值及应力影响深度有所降低。
But its maximum compressive residual stress and influencing depth reduces.
喷丸后扭转疲劳极限提高的主要原因是残余压应力的作用。
Compressive residual stress are the main factor in the increase of torsion fatigue limit.
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