Global strain generated by shuffling-dominated {10(1)over-bar2} < 10(1)over-bar(1)over-bar > twinning

被引：77
作者：
Li, B. [1 ]
Zhang, X. Y. [2 ]
机构：
[1] Mississippi State Univ, Ctr Adv Vehicular Syst, Starkville, MS 39759 USA
[2] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 630044, Peoples R China
来源：
SCRIPTA MATERIALIA | 2014年 / 71卷
基金：
中国国家自然科学基金;
关键词：
Deformation twinning; Dislocations; Shuffling; Twinning shear; MAGNESIUM ALLOY; BEHAVIOR; TWINS; DISLOCATIONS; COMPRESSION; CRYSTALS; METALS; PLANE;
D O I：
10.1016/j.scriptamat.2013.10.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Recent experimental observations have revealed that {10 (1) over bar2} < 10<(1)over bar>(1) over bar > twinning involves zero shear, confirming this twinning mode is dominated by shuffling rather than shear. This raises the question: how is global strain generated by shuffling in hexagonal close-packed metals without involving shear? This paper addresses this important question. We demonstrate that although shuffling does not contribute to the twinning shear, it generates a normal strain along the c-axis due to the misfit between the parent and the twin lattice. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：45 / 48
页数：4
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