中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Towards more uniform deformation in metallic glasses: The role of Poisson's ratio

文献类型:期刊论文

作者Wei YJ(魏宇杰); Lei XQ(雷现奇); Huo LS; Wang WH; Greer AL
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2013-01-10
卷号560页码:510-517
通讯作者邮箱yujie_wei@lnm.imech.ac.cn
关键词Bending test Metallic glasses Micromechanical modelling Plastic deformation Shear bands
ISSN号0921-5093
产权排序[Wei, Yujie; Lei, Xianqi] Chinese Acad Sci, LNM, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Huo, Li-Shan; Wang, Wei-Hua] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China; [Greer, A. L.] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
通讯作者Wei, YJ (reprint author), Chinese Acad Sci, LNM, Inst Mech, State Key Lab Nonlinear Mech, Bei Si Huan Xi Rd 15, Beijing 100190, Peoples R China.
合作状况国际
中文摘要We develop a quantitative analysis of how the plastic deformation in a metallic glass is more uniform if its Poisson ratio v is higher. The plasticity of metallic glasses under ambient conditions is mediated by shear localized in thin bands, and can be characterized by experiments on the bending of thin plates. We extend the analysis by Conner et al. (Conner et al., J. AppL Phys. 94 (2003), 904-911) of bands in bent plates to include the micromechanics of individual shear bands. Expressions are derived for the shear-band spacing and the offset on each band. Both these quantities are predicted to decrease as v is increased. The predictions are tested against measurements on metallic glasses with a wide range of v. Good agreement is found, supporting the new model for the shear-band spacing, and pointing the way towards more diffuse deformation, and consequently improved plasticity and toughness, of metallic glasses as v increases toward the limiting value of 0.5.
学科主题固体力学
分类号一类
收录类别SCI ; EI
资助信息Chinese Academy of Sciences; NSF of China [11021262, 50921091]; MOST 973 of China [2012CB937500, 2010CB731603]; EPSRC
原文出处http://dx.doi.org/10.1016/j.msea.2012.09.096
语种英语
WOS记录号WOS:000313155400060
公开日期2013-03-07
源URL[http://dspace.imech.ac.cn/handle/311007/47029]  
专题力学研究所_非线性力学国家重点实验室
推荐引用方式
GB/T 7714
Wei YJ,Lei XQ,Huo LS,et al. Towards more uniform deformation in metallic glasses: The role of Poisson's ratio[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2013,560:510-517.
APA Wei YJ,Lei XQ,Huo LS,Wang WH,&Greer AL.(2013).Towards more uniform deformation in metallic glasses: The role of Poisson's ratio.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,560,510-517.
MLA Wei YJ,et al."Towards more uniform deformation in metallic glasses: The role of Poisson's ratio".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 560(2013):510-517.

入库方式: OAI收割

来源:力学研究所

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