Formation of adiabatic shear bands in the fatigued copper single crystal deformed at high strain rate

被引：0

作者：

Li, JW

Li, MY

Guo, XL

Li, SX ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Northeastern Univ, Sch Sci, Shenyang 110004, Peoples R China

来源：

ACTA METALLURGICA SINICA | 2005年 / 41卷 / 02期

关键词：

adiabatic shear band; Split-Hopkinson pressure bar (SHPB); copper single crystal; persistent slip band (PSB);

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The microstructures of the primary and fatigued copper single crystals deformed at high strain rate were studied by Split-Hopkinson pressure bar (SHPB) and SEM. The results indicate that it is difficult to form the adiabatic shear bands (SBs) for the primary copper single crystal but it is easy for fatigued copper single crystal deformed at high strain rate. Persistent slip bands (PSBs) and stress concentration induced by shock wave are the main reasons to form the adiabatic SBs. The spacing and width of the adiabatic SBs decrease with increasing strain rates.

引用

页码：161 / 166

页数：6

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