Twin stability in highly nanotwinned Cu under compression, torsion and tension

被引：70

作者：

Hodge, A. M. ^{[1
]}

Furnish, T. A. ^{[1
]}

Shute, C. J. ^{[2
]}

Liao, Y. ^{[2
]}

Huang, X. ^{[3
]}

Hong, C. S. ^{[3
]}

Zhu, Y. T. ^{[4
]}

Barbee, T. W., Jr. ^{[5
]}

Weertman, J. R. ^{[2
]}

机构：

[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[3] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, Mat Res Div, Danish Chinese Ctr Nanomet, DK-4000 Roskilde, Denmark

[4] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[5] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

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;

关键词：

Nanotwinned; Copper; Plastic deformation; Nanostructure; DEFORMATION; DISLOCATION; BOUNDARIES; STRENGTH; BEHAVIOR; SAMPLES; GROWTH; METALS; AL;

D O I：

10.1016/j.scriptamat.2012.01.027

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Twin stability under four distinct mechanical loading states has been investigated for highly nanotwinned Cu containing parallel nanotwins similar to 40 nm thick. Observed deformation-induced microstructural changes under tension, compression, tension-tension fatigue and torsion are qualitatively compared in order to assess twin stability as a function of the loading direction and stress. It is observed that the twins are very stable although small microstructural changes vary with deformation mode. Shear bands, deformation-induced grain growth and detwinning are also discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：872 / 877

页数：6

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