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
刊名	Acta Materialia
	2010
卷号	58 期号:11 页码:3877-3887
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
ISSN号	1359-6454
中文摘要	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.
原文出处	://WOS:000278562800007
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31250]
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	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.