Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals

doi:10.1016/j.actamat.2010.02.002

IMR OpenIR

	Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals
	Li, P.; Li, S. X.; Wang, Z. G.; Zhang, Z. F.
通讯作者	Li, P.(pli@imr.ac.cn)
	2010-05-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	58 期号:9 页码:3281-3294
摘要	This work reveals the formation mechanisms of saturation dislocation patterns in three typical multiple-slip oriented [0 0 1], [0 1 1] and [(1) over bar 1 1] copper single crystals. Compared with the single-slip oriented copper single crystals, the three multiple-slip oriented ones show very different dislocation patterns. It was found that the dislocation patterns in cyclically saturated copper single crystals are the Labyrinth structure for [0 0 1], wall structure for [0 1 1] and cell structure for [(1) over bar 1 1] , respectively. Based on a two-phase structure consisting of persistent slip bands and veins for single-slip orientation, the formation mechanisms of the dislocation patterns in multiple-slip oriented crystals are proposed as follows: the formation of the complex dislocation patterns depends on the activating slip system. The easy operation of the critical secondary slip system will contribute to the formation of the Labyrinth structure. The activation of the coplanar secondary slip system will be beneficial to formation of the cell structure. If no secondary slip system is activated, the wall structure is more prone to appear. Finally, the intrinsic relationship between various dislocation patterns and face centered cubic crystal structure was established. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	Orientation effect Cyclic deformation Copper single crystals Dislocation patterns
资助者	National Outstanding Young Scientist Foundation ; National Natural Science Foundation of China ; National Basic Research Program of China
DOI	10.1016/j.actamat.2010.02.002
收录类别	SCI
语种	英语
资助项目	National Outstanding Young Scientist Foundation[50625103] ; National Natural Science Foundation of China[50890173] ; National Basic Research Program of China[2010CB631006]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000277747400010
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：42[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/321006/99666
专题	中国科学院金属研究所
通讯作者	Li, P.
作者单位	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, P.,Li, S. X.,Wang, Z. G.,et al. Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals[J]. ACTA MATERIALIA,2010,58(9):3281-3294.
APA	Li, P.,Li, S. X.,Wang, Z. G.,&Zhang, Z. F..(2010).Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals.ACTA MATERIALIA,58(9),3281-3294.
MLA	Li, P.,et al."Formation mechanisms of cyclic saturation dislocation patterns in [001], [011] and [(1)over-bar 1 1] copper single crystals".ACTA MATERIALIA 58.9(2010):3281-3294.