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
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| 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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