Effect of dislocation-twin boundary interaction on deformation by twin boundary migration

被引：69

作者：

Xin, Yunchang ^{[1
]}

Lv, Liangchen ^{[1
]}

Chen, Houwen ^{[1
]}

He, Cong ^{[1
]}

Yu, Huihui ^{[1
]}

Liu, Qing ^{[1
]}

机构：

[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 662卷

关键词：

Dislocations; Twin boundary migration; Mechanical properties; Strain hardening; MAGNESIUM ALLOY; MG-3AL-1ZN ALLOY; MG ALLOY; NANOSCALE; BEHAVIOR; TENSILE; COPPER;

D O I：

10.1016/j.msea.2016.03.061

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of interaction between (10 (1) over bar2} twin boundaries (TBs) and < a > dislocations on deformation behavior of TBs migration process was studied. This TB-dislocation interaction greatly enhances activation stress for TB motion and retards TB migration during reloading. Interestingly, a severe TB-dislocation interaction improves strain hardening at the early stage, while reduces the peak hardening rate at the latter stage. High resolution transmission electron microscopy results indicate that severe TB-dislocation interaction greatly damages the coherence of TBs and might induce curving of TBs. Migration of the TBs that intensively interact with dislocations leaves behind low angle boundaries at the initial TBs. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：95 / 99

页数：5

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