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dislocations and their interactions with other crystal defects in a Mg alloy

文献类型：期刊论文

作者Hu, W. W. ; Yang, Z. Q. ; Ye, H. Q.
刊名ACTA MATERIALIA
出版日期2017-02-01
卷号124页码:372-382
ISSN号1359-6454
关键词Mg alloy dislocation Plastic deformation Ductility Grain boundary
通讯作者Yang, ZQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
中文摘要 dislocations and their interactions with other crystal defects in a Mg alloy have been investigated using atomic-resolution aberration-corrected scanning transmission electron microscopy. Two types of dislocations, with either a 60 degrees or a screw component, were observed in Mg matrix, and both of them could form low-angle tilt grain boundaries during plastic deformation. dislocations could lead to migration of grain boundaries formed previously by dislocations in deformed Mg matrix. Moving dislocations cut and reacted with basal stacking faults, producing new defect structures during deformation. The mechanisms for interaction/reaction between dislocations and other defects are modeled based on atomic-resolution observations. These experimental results provide clear evidence for the occurrence of long range motion of dislocations with relatively compact cores during plastic deformation, instead of immediate dissociation on basal planes. (c) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
学科主题Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助信息National Natural Science Foundation of China [51171189, 51371178, 51390473]; Liaoning Province [2015020237]; SYNL [2015RP17]
收录类别SCI
语种英语
公开日期2017-08-17
源URL[http://ir.imr.ac.cn/handle/321006/78322]  
专题金属研究所_中国科学院金属研究所
推荐引用方式
GB/T 7714		 Hu, W. W.,Yang, Z. Q.,Ye, H. Q.. dislocations and their interactions with other crystal defects in a Mg alloy[J]. ACTA MATERIALIA,2017,124:372-382.
APA Hu, W. W.,Yang, Z. Q.,&Ye, H. Q..(2017). dislocations and their interactions with other crystal defects in a Mg alloy.ACTA MATERIALIA,124,372-382.
MLA Hu, W. W.,et al." dislocations and their interactions with other crystal defects in a Mg alloy".ACTA MATERIALIA 124(2017):372-382.

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来源：金属研究所

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