Scaling of maximum strength with grain size in nanotwinned fcc metals
文献类型：期刊论文
| 作者 | Wei YJ(魏宇杰)
|
| 刊名 | Physical Review B
 |
| 出版日期 | 2011 |
| 卷号 | 83期号:13页码:132104 |
| 通讯作者邮箱 | yujie_wei@lnm.imech.ac.cn |
| 关键词 | Nanocrystalline Materials Deformation Mechanisms Boundary Diffusion Rate Sensitivity Nanoscale Copper Accommodation Strain Twins |
| ISSN号 | 1098-0121 |
| 产权排序 | Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China |
| 中文摘要 | 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). |
| 学科主题 | Physics |
| 分类号 | 二类/Q1 |
| 类目[WOS] | Physics, Condensed Matter |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | NANOCRYSTALLINE MATERIALS ; DEFORMATION MECHANISMS ; BOUNDARY DIFFUSION ; RATE SENSITIVITY ; NANOSCALE ; COPPER ; ACCOMMODATION ; STRAIN ; TWINS |
| 收录类别 | SCI |
| 资助信息 | 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. |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevB.83.132104 |
| 语种 | 英语 |
| WOS记录号 | WOS:000292142300001 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/44934]  |
| 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. Scaling of maximum strength with grain size in nanotwinned fcc metals[J]. Physical Review B,2011,83(13):132104. |
| APA | 魏宇杰.(2011).Scaling of maximum strength with grain size in nanotwinned fcc metals.Physical Review B,83(13),132104. |
| MLA | 魏宇杰."Scaling of maximum strength with grain size in nanotwinned fcc metals".Physical Review B 83.13(2011):132104. |
入库方式： OAI收割
来源：力学研究所
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