Serrated flow and abnormal strain rate sensitivity of a magnesium-lithium alloy

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	Serrated flow and abnormal strain rate sensitivity of a magnesium-lithium alloy
	C. Wang ; Y. B. Xu ; E. H. Han
刊名	Materials Letters
	2006
卷号	60 期号:24 页码:2941-2944
关键词	mechanical properties metals and alloys deformation and fracture chemical diffusion-coefficients crystals behavior
ISSN号	0167-577X
中文摘要	Tensile experiment of LA41 magnesium alloy was carried out and serrated flow was apparent throughout the deformation history. This alloy exhibited abnormal strain rate sensitivity (SRS); that is, SRS was positive in the strain rate range from 1.33 x 10(-4) s(-1) to 6.66 x 10(-4) s(-1), and became negative in another range from 6.66 x 10(-4) s(-1) to 1.33 x 10(-2) s(-1). The critical strain was observed to increase with increasing strain but decrease with increasing temperature. In addition, activation energy for serrated flow was calculated and variations of SRS were explained through the competition between dynamic strain aging (DSA) of solute atoms and shearing of precipitates by dislocations. (c) 2006 Published by Elsevier B.V.
原文出处	://WOS:000240216400007
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34497]
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	C. Wang,Y. B. Xu,E. H. Han. Serrated flow and abnormal strain rate sensitivity of a magnesium-lithium alloy[J]. Materials Letters,2006,60(24):2941-2944.
APA	C. Wang,Y. B. Xu,&E. H. Han.(2006).Serrated flow and abnormal strain rate sensitivity of a magnesium-lithium alloy.Materials Letters,60(24),2941-2944.
MLA	C. Wang,et al."Serrated flow and abnormal strain rate sensitivity of a magnesium-lithium alloy".Materials Letters 60.24(2006):2941-2944.