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首页> 外文期刊>Applied Surface Science >Effect of multiple passes treatment in waterjet peening on fatigue performance
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Effect of multiple passes treatment in waterjet peening on fatigue performance

机译：水射流喷丸中多次通过处理对疲劳性能的影响

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摘要

The influence of waterjet peening on the residual stresses and fatigue performance of AISI 304 is investigated. The specimen surfaces were treated with multiple jet passes. The fatigue strength was evaluated using an alternating bending fatigue tester. The results of XRD measurements showed that a higher amount of compressive residual stresses is induced in the treated specimens. This strengthening layer is limited within the first 100 pin below the surface, which had been confirmed by micro hardness measurements. Even though the treated specimens showed compressive residual stresses the fatigue limit is lower than that of the untreated specimens. The roughness of the surface and the resulting notch effect seems to be stronger than the positive effect of the hardened layer. (C) 2015 Elsevier B.V. All rights reserved.
机译：研究了喷水喷丸处理对AISI 304残余应力和疲劳性能的影响。样品表面经过多次喷射处理。使用交替弯曲疲劳试验机评价疲劳强度。 XRD测量的结果表明，在处理过的样品中会产生更高的压缩残余应力。该强化层被限制在表面下方的前100个销钉内，这已经通过显微硬度测量得到了证实。即使处理过的试样显示出压缩残余应力，其疲劳极限仍低于未处理试样的疲劳极限。表面的粗糙度和所得的缺口效应似乎比硬化层的正面效应更强。 （C）2015 Elsevier B.V.保留所有权利。

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