The effect of high current density electropulsing on persistent slip bands (PSBs) in fatigued copper single crystals

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作者
Xiao, Suhong
Zhou, Yizhou
Wu, Shiding
Yao, Ge
Li, Shou
Zhou, Benlian
机构
[1] Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
[2] Stt. Key Lab. Fatigue Fracture Mat., Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
[3] Intl. Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110015, China
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摘要
Fatigued copper single crystals with [123] loading axis were treated by high current density electropulsing after the formation of persistent slip bands (PSBs). The results show that thermal compressive stress caused by electropulsing improved the stress concentration at the interface between PSB and matrix, and the PSBs disappeared locally. Theoretical calculation shows that the treatment by high current density electropulsing could raise the fatigue life of copper single crystals.
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页码:1237 / 1239
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