基于双束切槽法的DZ125镍基合金喷丸残余应力的研究
Shot Peening of DZ125 Nickel-Based Alloy Based on Double-Beam Grooving Method Research on Residual Stress
唐菁隆 1李奎 2金向明 2冷坤 2杨杰1
作者信息
- 1. 西南交通大学 力学与航空航天学院,成都 611756
- 2. 中国航发湖南动力机械研究所,株洲 412002
- 折叠
摘要
喷丸是提高零部件抗疲劳强度的重要工艺,其中喷丸引入的残余应力对其有着巨大影响.目前,人们对喷丸的残余应力研究仍然不足,主要是因为各种测试方法存在各自的缺陷,无法满足工程的实际需要.针对工程实际中喷丸部件长时间处于热暴露工作环境的情况,基于双束切槽法研究高温时效对DZ125 镍基合金喷丸残余应力的影响.结果表明,高温时效会大幅降低喷丸引入的残余压应力.
Abstract
Shot peening is an important process to improve the fatigue strength of parts,and the residual stress introduced by shot peening has a great influence on it.The research on the residual stress of shot peening is still insufficient,mainly because various test methods still have their own defects and cannot meet the actual needs of the project.In view of the fact that the shot peening parts may work under thermal exposure conditions for a long time in engineering practice,the effect of high temperature aging on the residual stress of DZ125 nickel-based alloy shot peening was studied based on the double-beam grooving method.The results show that high temperature aging can greatly reduce the residual compressive stress introduced by shot peening.
关键词
残余应力检测/喷丸/聚焦离子束/切槽法Key words
residual stress detection/shot peening/focused ion beam/groove method引用本文复制引用
出版年
2024
NETL
NSTL
万方数据