Investigation of deformation instability of Au/Cu multilayers by indentation

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	Investigation of deformation instability of Au/Cu multilayers by indentation
	Y. P. Li; X. F. Zhu; G. P. Zhang; J. Tan; W. Wang; B. Wu
	2010
发表期刊	Philosophical Magazine
ISSN	1478-6435
卷号	90 期号:22 页码:3049-3067
摘要	Plastic deformation behavior of Au/Cu multilayers with individual layer thicknesses of 25-250 nm was investigated via microindentation experiments. It was found that plastic instability of the Au/Cu multilayer exhibits strong length scale (individual layer thickness and grain size) dependence. The smaller the length scale, the easier shear bands form. In other words, plastic deformation becomes unstable with decreasing length scale. Cross-sectional observation along with plan-view indicates that the occurrence of plastic deformation instability corresponds to transformation of the deformation mechanism associated with geometrical configuration and length scale of the material. At nanometer scale, buckling-assisted interface crossing of dislocations results in local shear band, while, at submicron scale or above, local dislocation pileup-induced interface offset leads to plastic instability. Theoretical analysis is conducted to understand the length scale-dependent plastic deformation behavior of the multilayer.
部门归属	[li, y. p.; zhu, x. f.; zhang, g. p.; tan, j.; wang, w.; wu, b.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;zhang, gp (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;gpzhang@imr.ac.cn
关键词	Multilayer Deformation Mechanism Interface Dislocation Deformation Stability Transmission Electron-microscopy Metallic Multilayers Plastic-deformation Shear Bands Strengthening Mechanisms Amorphous-alloys Thin-films Composites Nanoindentation Evolution
URL	查看原文
WOS记录号	WOS:000278714700005
引用统计	被引频次：65[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/321006/31251
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. P. Li,X. F. Zhu,G. P. Zhang,et al. Investigation of deformation instability of Au/Cu multilayers by indentation[J]. Philosophical Magazine,2010,90(22):3049-3067.
APA	Y. P. Li,X. F. Zhu,G. P. Zhang,J. Tan,W. Wang,&B. Wu.(2010).Investigation of deformation instability of Au/Cu multilayers by indentation.Philosophical Magazine,90(22),3049-3067.
MLA	Y. P. Li,et al."Investigation of deformation instability of Au/Cu multilayers by indentation".Philosophical Magazine 90.22(2010):3049-3067.