Critical shear stress for onset of plasticity in a nanocrystalline Cu determined by using nanoindentation

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	Critical shear stress for onset of plasticity in a nanocrystalline Cu determined by using nanoindentation
	J. Chen; W. Wang; L. H. Qian; K. Lu
	2003
发表期刊	Scripta Materialia
ISSN	1359-6462
卷号	49 期号:7 页码:645-650
摘要	The plastic deformation behavior was investigated by using nanoindentation in a magneto-sputtered nanocrystalline (nc) Cu film with an average grain size of 14 mn. The determined critical shear stress to initiate plasticity in the nc-Cu sample (about 8.3 GPa) is identical to that for nucleation of lattice dislocations in an annealed coarse-grained Cu (8.5 GPa), and both values are close to the theoretical shear strength in the dislocation-free single crystal. This observation, in agreement with the atomistic simulation results, supports the argument that the onset of plasticity of the nc-Cu is associated with initiation of dislocation activities at grain boundaries. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, k (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Nanoindentation Nanocrystalline Copper Plastic Deformation Dislocation Copper Thin-films Polycrystalline Materials Deformation Indentation Creep
URL	查看原文
WOS记录号	WOS:000184618300004
引用统计	被引频次：52[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/321006/35799
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Chen,W. Wang,L. H. Qian,et al. Critical shear stress for onset of plasticity in a nanocrystalline Cu determined by using nanoindentation[J]. Scripta Materialia,2003,49(7):645-650.
APA	J. Chen,W. Wang,L. H. Qian,&K. Lu.(2003).Critical shear stress for onset of plasticity in a nanocrystalline Cu determined by using nanoindentation.Scripta Materialia,49(7),645-650.
MLA	J. Chen,et al."Critical shear stress for onset of plasticity in a nanocrystalline Cu determined by using nanoindentation".Scripta Materialia 49.7(2003):645-650.