Effects of Laser Shock Processing on Fatigue Lives of Heat-resistant Steel and Estimation of Fatigue Safe Lives

摘要：

Fatigue tensile treatment was performed on 00Cr12 heat-resistant steel specimens which had been treated by laser shock processing (LSP). The unilateral tolerance factor statistical analysis method and the two-dimensional Weibull distribution method were used to predict the values of fatigue safe lives of the specimens respectively. The results indicate that the fatigue lives of 00Cr12 specimens were enhanced greatly after LSP, and improved by 62％ compared with the specimens which were not treated by LSP. The unilateral tolerance factor method obtained an exact estimation value of the fatigue safe life;while the two-dimensional Weibull distribution method can get a range of values of fatigue safe lives, the fatigue safe lives of the specimens which after LSP were a range from 116570 to 150230, the average value was 132330. The two-dimensional Weibull distribution method has more engineering applicability and can be used to estimate the fatigue safe lives with fewer experiments.

关键词： Laser Shock Processing 00Cr12 Alloy Fatigue life Fatigue safe life

作者: Yongzhuo Huangfu Xudong Ren Liang Ruan Yongkang Zhang Dawei Jiang

作者单位: Jiangsu Key Laboratory of Laser Manufacture Science and Technology Ministry, Jiangsu University,Zhenjiang 212013, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 376-379

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）