Cyclic deformation response and dislocation structure of Cu single crystals oriented for double slip

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	Cyclic deformation response and dislocation structure of Cu single crystals oriented for double slip
	B. Gong; Z. R. Wang; Z. G. Wang; Y. W. Zhang
	1996
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	210 期号:1-2 页码:94-101
摘要	Cyclic deformation behavior of double-slip oriented Cu single crystals with a stress axis in the [034] direction was investigated under plastic strain control mode for a shear strain amplitude range of 1 x 10(-4) to 5 x 10(-3). Dislocation structures in the tested samples were observed using a transmission electronic microscope. It has been found that the effect of the operation of critical slip in these [034] crystals on cyclic responses and dislocation structures is nearly the same as that of increase in strain amplitude. The nucleation stress and number of cycles for PSB formation at each specific strain amplitude in the double-slip oriented crystals were found to be both considerably lower than those observed in single-slip oriented crystals. This observation is in a good agreement with the Kuhlmann-Wilsdorf and Laird analysis, in that the formation of PSBs is associated with glide behavior on the secondary slip system. A dislocation ''cord'' structure has also been observed and is believed to be caused by the operation of the cross-slip system during cyclic deformation, Labyrinth wall structures were found to form with increase in strain amplitude by the operation of critical slip and cross-slip systems. However, the formation of labyrinth structure was suppressed by the coplanar slip at high strain amplitudes.
部门归属	univ toronto,dept met & sci mat,toronto,on m5s 3ea,canada. chinese acad sci,inst met res,state key labs fatigue & fracture mat,shenyang 110015,peoples r china.
关键词	Cyclic Deformation Copper Single Crystals Dislocation Structures Plastic Strain Amplitudes 70-30 Alpha-brass Copper-crystals Fcc Metals Behavior Fatigue Bands Nucleation Stress
URL	查看原文
WOS记录号	WOS:A1996UX63300011
引用统计	被引频次：31[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/321006/38284
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Gong,Z. R. Wang,Z. G. Wang,et al. Cyclic deformation response and dislocation structure of Cu single crystals oriented for double slip[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1996,210(1-2):94-101.
APA	B. Gong,Z. R. Wang,Z. G. Wang,&Y. W. Zhang.(1996).Cyclic deformation response and dislocation structure of Cu single crystals oriented for double slip.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,210(1-2),94-101.
MLA	B. Gong,et al."Cyclic deformation response and dislocation structure of Cu single crystals oriented for double slip".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 210.1-2(1996):94-101.