Orientation dependence of dislocation structures in cyclically deformed Cu-16At. pct Al alloy single crystals

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	Orientation dependence of dislocation structures in cyclically deformed Cu-16At. pct Al alloy single crystals
	X. W. Li; X. M. Wu; Z. G. Wang; Y. Umakoshi
	2003
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	34 期号:2 页码:307-318
摘要	The dislocation structures induced by the cyclic deformation of Cu-16 at. pct Al alloy single crystals oriented, typically, as [(1) over bar 23] for single slip and [023] and [(1) over bar 17] for double slip, were studied by transmission electron microscopy (TEM) and compared with the results of Cu single crystals. Completely unlike the dislocation structures of Cu single crystals of corresponding orientations, the dislocation structures of these oriented Cu-16 at. pet Al alloy single crystals show a typical planar morphology. As the applied-plastic-stain amplitude increases, the dislocation configuration changes, on the whole, from multipolar arrays to dislocation tangles in the primary slip plane and front low-density planar slip bands to well-developed persistent Luder's bands (PLBs) in the planes normal to the primary slip plane, respectively. Secondary slips can be clearly observed to activate from very low plastic-strain amplitudes in all three Cu-16 at. pet Al single crystals investigated. Interestingly, the crystallographic orientation has almost no effect on the dislocation structure of Cu-16 at. pct Al single crystals.
部门归属	chinese acad sci, inst met res, state key lab fatigue & fracture mat, shenyang 110016, peoples r china. osaka univ, grad sch engn, dept mat sci & engn, suita, osaka, japan. chinese acad sci, inst met res, shenyang natl lab mat sci, beijing, peoples r china. liaoning elect power res inst, shenyang 110006, peoples r china. chinese acad sci, inst met res, state key lab fatigue & fracture mat, beijing 100864, peoples r china.;li, xw (reprint author), chinese acad sci, inst met res, state key lab fatigue & fracture mat, shenyang 110016, peoples r china;umakoshi@mat.eng.osaka-u.ac.jp
关键词	Stress-strain Response Double Slip Orientation Stacking-fault Energy Deformation-behavior Stereographic Triangle Burst Behavior Copper Cu Fatigue Temperature
URL	查看原文
WOS记录号	WOS:000180680800012
引用统计	被引频次：19[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/321006/35902
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. W. Li,X. M. Wu,Z. G. Wang,et al. Orientation dependence of dislocation structures in cyclically deformed Cu-16At. pct Al alloy single crystals[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2003,34(2):307-318.
APA	X. W. Li,X. M. Wu,Z. G. Wang,&Y. Umakoshi.(2003).Orientation dependence of dislocation structures in cyclically deformed Cu-16At. pct Al alloy single crystals.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,34(2),307-318.
MLA	X. W. Li,et al."Orientation dependence of dislocation structures in cyclically deformed Cu-16At. pct Al alloy single crystals".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 34.2(2003):307-318.