Characterization of dislocation structures in [(1)over-bar11] copper single crystals using electron channelling contrast technique in SEM

doi:10.1002/crat.200800346

IMR OpenIR

	Characterization of dislocation structures in [(1)over-bar11] copper single crystals using electron channelling contrast technique in SEM
	Li, Xiao-Wu 1,2; Zhou, Yang 1; Guo, Wei-Wei 1; Zhang, Guang-Ping 3
通讯作者	Li, Xiao-Wu(xwli@mail.neu.edu.cn)
	2009-03-01
发表期刊	CRYSTAL RESEARCH AND TECHNOLOGY
ISSN	0232-1300
卷号	44 期号:3 页码:315-321
摘要	The dislocation structures induced by low-plastic-strain-amplitude cyclic deformation of [(1) over bar 11] multiple-slip-oriented Cu single crystals were investigated using electron channelling contrast (ECC) technique in scanning electron microscopy (SEM). At a low plastic strain amplitude gamma(pl) of 8.8 x 10(-5), the saturated dislocation structure is mainly composed of labyrinth-like vein structure (or irregular labyrinths), and the cyclic hardening behavior at such a low gamma(pl) is interpreted as being the result of dislocation multiplication by a Frank-Read mechanism. As gamma(pl) increases to 4.0 x 10(-4), the unsaturated dislocation structure exhibits two kinds of distinctive configurations, i.e., dislocation walls and misoriented cells. Interestingly, these misoriented dislocation cells are strictly aligned along the primary slip plane (111), constituting a unique persistent slip band (PSB) structure. Here, these cells are thus called PSB cells. In addition, there is a locally distinctive region comprising some cells having a recrystallization-like feature in the whole structure of PSB cells. The formation of the structure of PSB cells is discussed. (c) 2009 WILEY-VCH Verlag GmbH & Co. KGaA. Weinheim
关键词	Cu single crystal dislocation structure multiple slip plastic strain amplitude cyclic deformation SEM-ECC
资助者	New Century Excellent Talents ; Ministry of Education ; Scientific Research Foundation for the Returned Overseas Chinese Scholars ; Northeastern University and State Education Ministry, P. R. China ; National Natural Science Foundation of China (NSFC)
DOI	10.1002/crat.200800346
收录类别	SCI
语种	英语
资助项目	New Century Excellent Talents[NCET-07-162] ; Ministry of Education ; Scientific Research Foundation for the Returned Overseas Chinese Scholars ; Northeastern University and State Education Ministry, P. R. China ; National Natural Science Foundation of China (NSFC)[50671023] ; National Natural Science Foundation of China (NSFC)[50771029]
WOS研究方向	Crystallography
WOS类目	Crystallography
WOS记录号	WOS:000264582500013
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：20[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/321006/96947
专题	中国科学院金属研究所
通讯作者	Li, Xiao-Wu
作者单位	1.Northeastern Univ, Inst Mat Phys & Chem, Coll Sci, Shenyang 110004, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Engn Mat, Minist Educ, Shenyang 110004, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiao-Wu,Zhou, Yang,Guo, Wei-Wei,et al. Characterization of dislocation structures in [(1)over-bar11] copper single crystals using electron channelling contrast technique in SEM[J]. CRYSTAL RESEARCH AND TECHNOLOGY,2009,44(3):315-321.
APA	Li, Xiao-Wu,Zhou, Yang,Guo, Wei-Wei,&Zhang, Guang-Ping.(2009).Characterization of dislocation structures in [(1)over-bar11] copper single crystals using electron channelling contrast technique in SEM.CRYSTAL RESEARCH AND TECHNOLOGY,44(3),315-321.
MLA	Li, Xiao-Wu,et al."Characterization of dislocation structures in [(1)over-bar11] copper single crystals using electron channelling contrast technique in SEM".CRYSTAL RESEARCH AND TECHNOLOGY 44.3(2009):315-321.