Cyclic saturation dislocation structures of multiple-slip-oriented copper single crystals

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	Cyclic saturation dislocation structures of multiple-slip-oriented copper single crystals
	Li, XW ; Umakoshi, Y ; Li, SX ; Wang, ZG
刊名	ZEITSCHRIFT FUR METALLKUNDE
	2001-11-01
卷号	92 期号:11 页码:1222-1226
关键词	dislocation structure cyclic deformation multiple slip copper single crystal
ISSN号	0044-3093
通讯作者	Li, XW()
英文摘要	The dislocation structures of [011] and [111] multiple-slip-oriented Cu single crystals cyclically saturated at constant plastic strain amplitudes were investigated through transmission electron microscopy. The results obtained on [001] multiple-slip-oriented Cu single crystals were also included for summarization. Unlike the case for single-slip-oriented Cu single crystals, the crystallographic orientation has a strong effect on the saturation dislocation structure in these three multiple-slip-oriented crystals. For the [011] crystal, different dislocation patterns such as veins, PSB walls, labyrinths and PSB ladders were observed. The formation of PSB ladders is believed to be a major reason for the existence of a plateau region in the cyclic stress-strain (CSS) curve for the [011] crystal. The cyclic saturation dislocation structure of a [I I I] crystal cycled at a low applied strain amplitude gamma (p1) of 2.0 x 10(-4) was found to consist of irregular cells, which would develop into a more regular arrangement (e.g. PSB ladder-like) and the scale of which tends to decrease with increasing gamma (p1). Finally, three kinds of representative micro-deformation mode were summarized and termed as labyrinth-mode (or [001]-mode), cell-mode (or [III]-mode) and PSB ladder-mode (or [011]mode).
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CARL HANSER VERLAG
WOS记录号	WOS:000172874500005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/112670]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, XW
作者单位	1.Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan 2.Chinese Acad Sci, Met Res Inst, State Key Lab Fatique & Fracture Mat, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Li, XW,Umakoshi, Y,Li, SX,et al. Cyclic saturation dislocation structures of multiple-slip-oriented copper single crystals[J]. ZEITSCHRIFT FUR METALLKUNDE,2001,92(11):1222-1226.
APA	Li, XW,Umakoshi, Y,Li, SX,&Wang, ZG.(2001).Cyclic saturation dislocation structures of multiple-slip-oriented copper single crystals.ZEITSCHRIFT FUR METALLKUNDE,92(11),1222-1226.
MLA	Li, XW,et al."Cyclic saturation dislocation structures of multiple-slip-oriented copper single crystals".ZEITSCHRIFT FUR METALLKUNDE 92.11(2001):1222-1226.