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
刊名	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
	2003
卷号	34 期号:2 页码:307-318
关键词	stress-strain response double slip orientation stacking-fault energy deformation-behavior stereographic triangle burst behavior copper cu fatigue temperature
ISSN号	1073-5623
中文摘要	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.
原文出处	://WOS:000180680800012
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/35902]
专题	金属研究所_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.