Work hardening of polycrystalline Cu with nanoscale twins

被引：167

作者：

Lu, L. ^{[1
]}

You, Z. S. ^{[1
]}

Lu, K. ^{[1
]}

机构：

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

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 11期

基金：

美国国家科学基金会; 新加坡国家研究基金会; 中国国家自然科学基金;

关键词：

Twin boundary; Nanotwinned metals; Size effect; Work hardening; STRAIN-RATE SENSITIVITY; CENTERED-CUBIC METALS; NANO-SCALE TWINS; ULTRAHIGH-STRENGTH; TENSILE PROPERTIES; MAXIMUM STRENGTH; GRAINED CU; COPPER; DUCTILITY; DEFORMATION;

D O I：

10.1016/j.scriptamat.2011.12.046

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Engineering twin boundaries at the nanometer scale is regarded as an effective approach to achieve high strength while maintaining a substantial work-hardening ability. In this paper, the effects of twin thickness, grain size as well as strain rate on the work-hardening behavior of polycrystalline pure Cu with nanoscale twins are analyzed. The contribution of four possible work-hardening components (Types I-TV) to the hardening and softening process of nanotwinned Cu is also discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：837 / 842

页数：6

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