<c+a> dislocations and their interactions with other crystal defects in a Mg alloy

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	dislocations and their interactions with other crystal defects in a Mg alloy
	Hu, W. W.; Yang, Z. Q.; Ye, H. Q.; Yang, ZQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
	2017-02-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	124 页码:372-382
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.; 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.
部门归属	[hu, w. w. ; yang, z. q. ; ye, h. q.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [hu, w. w.] univ chinese acad sci, beijing 100039, peoples r china
关键词	Mg Alloy Dislocation Plastic Deformation Ductility Grain Boundary
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China [51171189, 51371178, 51390473]; Liaoning Province [2015020237]; SYNL [2015RP17]
收录类别	SCI
语种	英语
WOS记录号	WOS:000393000800038
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78322
专题	中国科学院金属研究所
通讯作者	Yang, ZQ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Hu, W. W.,Yang, Z. Q.,Ye, H. Q.,et al. 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.,&Yang, ZQ .(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.