Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals

IMR OpenIR

	Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals
	X. W. Li; Z. G. Wang; Y. W. Zhang; S. X. Li; Y. Umakoshi
	2002
发表期刊	Physica Status Solidi a-Applied Research
ISSN	0031-8965
卷号	191 期号:1 页码:97-105
摘要	The dislocation structures of cyclically deformed coplanar [(2) over bar 55] and [(2) over bar 33] double-slip-oriented copper single crystals were studied by transmission electron microscopy and related to the macroscopic mechanical behavior. Experimental results indicated that the crystallographic orientation has nearly no effect on the cyclic stress-strain (CSS) behavior and dislocation structures of both [(2) over bar 55] and [(2) over bar 33] coplanar double-slip-oriented Cu single crystals. The cyclic dislocation structure of coplanar double-slip crystals consists primarily of dislocation cells, the scale of which decreases with increasing applied strain amplitude. Under certain applied strain amplitudes, the observed dislocation cells exhibit different features, including dislocation wall-like and persistent slip band (PSB) ladder-like features, which are favourable for accommodating much more plastic strains during cyclic deformation. The occurrence of a quasi-plateau, where the stresses show a slow increase with plastic strain amplitude, in the CSS curve of coplanar double-slip-oriented Cu single crystals was believed to result from the joint effects of the scale change of the cell structure and the formation of PSB ladder-like cell structure.
部门归属	chinese acad sci, inst met res, state key lab fatique mat, shenyang natl lab mat sci, shenyang 110015, peoples r china. osaka univ, grad sch engn, dept mat sci & engn, suita, osaka 5650871, japan.;li, xw (reprint author), chinese acad sci, inst met res, state key lab fatique mat, shenyang natl lab mat sci, shenyang 110015, peoples r china
关键词	Polycrystalline Copper Deformation-behavior Orientation Fatigue
URL	查看原文
WOS记录号	WOS:000175975600011
引用统计	被引频次：17[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/321006/36320
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. W. Li,Z. G. Wang,Y. W. Zhang,et al. Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals[J]. Physica Status Solidi a-Applied Research,2002,191(1):97-105.
APA	X. W. Li,Z. G. Wang,Y. W. Zhang,S. X. Li,&Y. Umakoshi.(2002).Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals.Physica Status Solidi a-Applied Research,191(1),97-105.
MLA	X. W. Li,et al."Dislocation structure in cyclically deformed coplanar double-slip-oriented copper single crystals".Physica Status Solidi a-Applied Research 191.1(2002):97-105.