期刊
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
卷 19, 期 1, 页码 99-106出版社
SPRINGER
DOI: 10.1007/s11665-009-9439-1
关键词
fatigue crack growth; friction stir welding; laser peening; shot peening; stress ratio; 7075
The effect of peening on the fatigue crack growth performance of friction stir-welded 7075 aluminum alloy was investigated. The fatigue crack growth rates were assessed for laser- and shot-peening conditions at stress ratios (R) of 0.1 and 0.7. The surface and through thickness residual stress distributions were characterized for the different regions in the weld. The results indicate a significant reduction in fatigue crack growth rates using laser peening compared to shot peening and the as-welded condition. The effect of the compressive stresses obtained through laser peening was deemed responsible for increasing the resistance to fatigue crack growth of the welds.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据