铸造技术2016，Vol.37Issue(9)：2048-2050,3.DOI:10.16410/j.issn1000-8365.2016.09.068
表面喷丸铝合金残余应力循环应力松弛试验研究
Experimental Study on Cyclic Stress Relaxation of Shot-peened Al Alloy
傅子霞1
作者信息
- 1. 长沙职业技术学院机械工程系,湖南长沙410217
- 折叠
摘要
Abstract
Different shot peening treatments were introduced and cyclic loading tests were carried out on 7075 Al alloy specimens.Residual stresses and surface micro-hardnesses under each cyclic loading were measured to analyze residual stress relaxation features.The results show that residual stresses and micro-hardness have intimate relationships since they are both the macroscopic represents of local lattice distortion and plastic deformation.Moreover,stress relaxation features and micro-hardness evolution pattems are greatly influenced by initial distribution states and external loadings.While cycle period just has a prophase influences in that irregular great variations would occur in early stage and stable small regular variations in medium-term and final stages.关键词
喷丸/铝合金/循环应力/应力松弛/显微硬度Key words
shot peening/Al alloy/cyclic stress/stress relaxation/micro-hardness分类
矿业与冶金引用本文复制引用
傅子霞..表面喷丸铝合金残余应力循环应力松弛试验研究[J].铸造技术,2016,37(9):2048-2050,3.
