On the formation of deformation bands in fatigued copper single crystals

被引：27

作者：

Li, SX ^{[1
]}

Li, XW ^{[1
]}

Zhang, ZF ^{[1
]}

Wang, ZG ^{[1
]}

Lu, K ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110015, Peoples R China

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 2002年 / 82卷 / 16期

关键词：

D O I：

10.1080/0141861021000013750

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The features of the deformation bands (DBs) in copper single crystals under cyclic straining were surveyed. A simple model was proposed to account for the formation of DBs. In this model, both crystal rotation and dislocation density variation induced by cyclic straining were considered. The gradual lattice rotation caused by tension and compression irreversibility is the main driving force for the formation of DBs. The drastic release of mobile dislocations resisted by the primary slip bands is the direct trigger for the formation of DBs. From this analysis, one may understand why the formation of DBs is easier in copper single crystals with double- and multiple-slip orientations than that with single-slip orientation. At the same time the effect of the dislocation avalanche factor on the formation of DBs was discussed.

引用

页码：3129 / 3147

页数：19

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