Scaling of maximum strength with grain size in nanotwinned fcc metals

doi:10.1103/PhysRevB.83.132104

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	Scaling of maximum strength with grain size in nanotwinned fcc metals
	Wei YJ(魏宇杰); Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
发表期刊	Physical Review B
	2011
卷号	83 期号:13 页码:132104
ISSN	1098-0121
摘要	Engineers usually face the difficulty of making careful choices between one good and another in terms of strength, ductility, and electrical conductance in nanostructured metals. The emergence of polycrystalline Cu with ultrafine grains and the included nanotwins supplies an ideal solution because such materials owe high strength, high electrical conductance, and intermediate ductility. We answer in this Brief Report where the strength of such materials maximizes and how it depends on grain size. Based on the competitive plastic deformation mechanisms-the strengthening mechanism by inclined dislocations (with respect to twin planes) and detwinning-induced softening-we find that the critical twin thickness where the strength maximizes is proportional to d(1/2) and the maximum strength is proportional to d(-1/2).
关键词	Nanocrystalline Materials Deformation Mechanisms Boundary Diffusion Rate Sensitivity Nanoscale Copper Accommodation Strain Twins
学科领域	Physics
DOI	10.1103/PhysRevB.83.132104
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000292142300001
关键词[WOS]	NANOCRYSTALLINE MATERIALS ; DEFORMATION MECHANISMS ; BOUNDARY DIFFUSION ; RATE SENSITIVITY ; NANOSCALE ; COPPER ; ACCOMMODATION ; STRAIN ; TWINS
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
项目资助者	Y.W. is grateful to the Chinese Academy of Sciences for financial support via the "Hundred Talent program" and support from NSFC via Grant No. 11021262.
课题组名称	LNM微结构计算力学（筹）
论文分区	二类/Q1
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44934
专题	非线性力学国家重点实验室
通讯作者	Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wei YJ,Wei, YJ . Scaling of maximum strength with grain size in nanotwinned fcc metals[J]. Physical Review B,2011,83,13,:132104.
APA	魏宇杰,&Wei, YJ .(2011).Scaling of maximum strength with grain size in nanotwinned fcc metals.Physical Review B,83(13),132104.
MLA	魏宇杰,et al."Scaling of maximum strength with grain size in nanotwinned fcc metals".Physical Review B 83.13(2011):132104.

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