Cyclic deformation behavior of double-slip-oriented copper single crystals III: conjugate double slip orientation on 001-(1)over-bar11 side of the stereographic triangle

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	Cyclic deformation behavior of double-slip-oriented copper single crystals III: conjugate double slip orientation on 001-(1)over-bar11 side of the stereographic triangle
	X. W. Li; Z. G. Wang; S. X. Li
	1999
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	269 期号:1-2 页码:166-174
摘要	The cyclic deformation behaviors of [(2) over bar 23] and [(1) over bar 12] conjugate double-slip-oriented copper single crystals were investigated at constant plastic shear strain amplitude gamma(pl) in the range of about 10(-4)-10(-2) at ambient temperature in air. The results of [(1) over bar 17] and [001] crystals are included for comparison. Unlike the plot of initial hardening rate theta(0.2) against gamma(pl) of the [(2) over bar 23] crystal which does not exhibit two obvious regions, the plot for the [(1) over bar 12] crystal exhibits two regions similar to those in single-slip-oriented crystals. The cyclic stress-strain (CSS) curve of the [(1) over bar 12] crystal shows a clear plateau over the range of about 5.0 x 10(-4)-4.0 x 10(-3), which is narrower than that of the single slip crystals (6.0 x 10(-5)-7.5 x 10(-3)) although the saturation shear stress is nearly the same. However, no obvious saturation phenomenon was observed in the cyclically deformed [(2) over bar 23] crystals over the range of plastic strain amplitude investigated. Even though the orientations of [(1) over bar 12], [(1) over bar 17] and [(2) over bar 23] crystals are on the same side of the stereographic triangle, their plateau behaviors in the CSS curve are quite different, i.e. the plateau regions of the CSS curves for the crystals located on both sides of the [(1) over bar 12] crystal tend to die out except that an obvious plateau region occurs in the cyclically deformed [(1) over bar 12] crystals. The results above are mainly attributed to the rather different slip deformation characteristics associated with the different crystal orientations. In addition, two types of deformation bands DBI and DBII, formed in the cyclically deformed [(1) over bar 12] and [(2) over bar 23] crystals, were also discussed in terms of crystallographic geometry. (C) 1999 Elsevier Science S.A. All rights reserved.
部门归属	acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china.;li, xw (reprint author), acad sinica, inst met res, state key lab fatigue & fracture mat, shenyang 110015, peoples r china
关键词	Copper Single Crystal Conjugate Double Slip Cyclic Deformation Crystallographic Orientation Plateau Region Deformation Band Dislocation-structures Features
URL	查看原文
WOS记录号	WOS:000082276900021
引用统计	被引频次：29[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/321006/37411
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,S. X. Li. Cyclic deformation behavior of double-slip-oriented copper single crystals III: conjugate double slip orientation on 001-(1)over-bar11 side of the stereographic triangle[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,1999,269(1-2):166-174.
APA	X. W. Li,Z. G. Wang,&S. X. Li.(1999).Cyclic deformation behavior of double-slip-oriented copper single crystals III: conjugate double slip orientation on 001-(1)over-bar11 side of the stereographic triangle.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,269(1-2),166-174.
MLA	X. W. Li,et al."Cyclic deformation behavior of double-slip-oriented copper single crystals III: conjugate double slip orientation on 001-(1)over-bar11 side of the stereographic triangle".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 269.1-2(1999):166-174.