Residual Stresses Induced by Surface Enhancement Processes

摘要：

　　The residual stress field caused by shot peening,hole cold expansion,laser shock peening and ultrosonic peening were presented and the influence of residual stresses on fatigue properties were investigated.The results show that shot peening can enhance the fatigue property,especially for high strength alloys.Moreover,hole cold expansion can increase the fatigue strength more than shot peening due to deeper residual compressive stress fields in surface strained layer and smoother surface.Laser shock peening and ultrasonic peening are the high intensity peening processes and can induce both the deeper residual compressive stress layer and the fine microstructure in surface strained layer,therefore they should have more important engineering applications in future.

关键词： residual stress shot peening hole cold expansion laser shock peening X-ray diffraction

作者: Yukui Gao Zheng Zhong

作者单位: College of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）