On plasticity and fracture of nano structured Cu/X (X = Au, Cr) multilayers: The effects of length scale and interface/boundary

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	On plasticity and fracture of nano structured Cu/X (X = Au, Cr) multilayers: The effects of length scale and interface/boundary
	Y. P. Li; G. P. Zhang
	2010
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	58 期号:11 页码:3877-3887
摘要	Plastic deformation and fracture behavior of two different types of Cu/X (X = Au, Cr) multilayers subjected to tensile stress were investigated via three-point bending experiments. It was found that the plastic deformation ability and fracture mode depended on layer thickness and interface/boundary. The Cu/Au multilayer showed significant features of plastic flow before fracture, and such plasticity was gradually suppressed by premature unstable shearing across the layer interface with decreasing layer thickness. In comparison, Cu/Cr multilayers were prone to a quasi-brittle normal fracture with decreasing layer thickness. Both experimental observations and theoretical analyses revealed differences in plasticity and fracture mode between the two types of metallic multilayers and the relevant physical mechanism transition due to length scale constraint and interface/boundary blocking of dislocation motion. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[li, y. p.; zhang, g. p.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhang, gp (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china;gpzhang@imr.ac.cn
关键词	Multilayers Plastic Deformation Fracture Length Scale Interface Thin-films Mechanical-properties Metallic Multilayers Ag/cu Multilayers Composites Deformation Nanocrystalline Strength Behavior Nanoindentation
URL	查看原文
WOS记录号	WOS:000278562800007
引用统计	被引频次：104[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/321006/31250
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. P. Li,G. P. Zhang. On plasticity and fracture of nano structured Cu/X (X = Au, Cr) multilayers: The effects of length scale and interface/boundary[J]. Acta Materialia,2010,58(11):3877-3887.
APA	Y. P. Li,&G. P. Zhang.(2010).On plasticity and fracture of nano structured Cu/X (X = Au, Cr) multilayers: The effects of length scale and interface/boundary.Acta Materialia,58(11),3877-3887.
MLA	Y. P. Li,et al."On plasticity and fracture of nano structured Cu/X (X = Au, Cr) multilayers: The effects of length scale and interface/boundary".Acta Materialia 58.11(2010):3877-3887.