Distribution of residual stress fields in TC6 blade by LSP

被引：8
作者：
Fang, Y. W. [1 ]
Zhao, S. H. [1 ]
Wang, Y. [1 ]
Sun, J. [1 ]
Li, P. Y. [2 ]
机构：
[1] Air Force Engn Univ, Xian 710077, Peoples R China
[2] Xian Univ Technol, Xian 710048, Peoples R China
来源：
SURFACE ENGINEERING | 2013年 / 29卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Laser shock processing; Residual stress; Multiple impact; Spot overlapping ratio; TC6; blade; LASER; ALLOY;
D O I：
10.1179/1743294413Y.0000000174
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim was to analyse distribution rule of residual stress fields in a TC6 titanium alloy blade with multiple impacts and different spot overlapping ratios by comparing the numerical simulation and laser shock processing (LSP) experiments results. A dynamic model based on the finite element method was presented to simulate multiple impacts and different spot overlapping ratios by single sided LSP with round laser spot, and the distribution rule of residual stress fields based on different process condition was described. Further, LSP experiments of multiple impacts and different spot overlapping ratios were executed to compare the simulation results by measuring and fractographic observation. The results indicated that simulated values were reasonable with experimental values, and the compressive residual stresses were greatly increased and driven deeper below the blade surface with multiple impacts and high spot overlapping ratios on the same spot.
引用
收藏
页码：608 / 615
页数：8
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