Understanding scale-dependent yield stress of metals at micrometre scales

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	Understanding scale-dependent yield stress of metals at micrometre scales
	C. Y. Dai; J. Xu; B. Zhang; G. P. Zhang
	2013
发表期刊	Philosophical Magazine Letters
ISSN	0950-0839
卷号	93 期号:9 页码:531-540
摘要	The mechanical softening behaviour of micrometre-scale metals (free-standing metal foils and wires) with decreasing either the geometrical or the microstructural scale (i.e. the smaller, the weaker) has recently been reported. Here, we present a mechanism-based model to understand the softening behaviour, which is based on competition between the effects of surface grain relaxation and the interior grain strengthening effect. The model describes well the yield stress of Cu foils with different ratios of the thickness to grain size.
部门归属	[dai, c. y. ; xu, j. ; zhang, g. p.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [dai, c. y.] shenyang univ chem technol, sch mat sci engn, shenyang 110142, peoples r china. [zhang, b.] northeastern univ, key lab anisotropy & texture mat, minist educ, shenyang 110819, 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	Copper Foils Yield Stress Dislocations Size Effect Mechanical Softening Mechanical-properties Nickel Polycrystals Grain-size Thickness Behavior Mems
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71180
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. Y. Dai,J. Xu,B. Zhang,et al. Understanding scale-dependent yield stress of metals at micrometre scales[J]. Philosophical Magazine Letters,2013,93(9):531-540.
APA	C. Y. Dai,J. Xu,B. Zhang,&G. P. Zhang.(2013).Understanding scale-dependent yield stress of metals at micrometre scales.Philosophical Magazine Letters,93(9),531-540.
MLA	C. Y. Dai,et al."Understanding scale-dependent yield stress of metals at micrometre scales".Philosophical Magazine Letters 93.9(2013):531-540.