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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
Source PublicationPhysical Review B
2011
Volume83Issue:13Pages:132104
ISSN1098-0121
AbstractEngineers 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).
KeywordNanocrystalline Materials Deformation Mechanisms Boundary Diffusion Rate Sensitivity Nanoscale Copper Accommodation Strain Twins
Subject AreaPhysics
DOI10.1103/PhysRevB.83.132104
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000292142300001
WOS KeywordNANOCRYSTALLINE MATERIALS ; DEFORMATION MECHANISMS ; BOUNDARY DIFFUSION ; RATE SENSITIVITY ; NANOSCALE ; COPPER ; ACCOMMODATION ; STRAIN ; TWINS
WOS Research AreaPhysics
WOS SubjectPhysics, Condensed Matter
Funding OrganizationY.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.
DepartmentLNM微结构计算力学(筹)
Classification二类/Q1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44934
Collection非线性力学国家重点实验室
Corresponding AuthorWei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Recommended Citation
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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