Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires
文献类型：期刊论文
| 作者 | Yang ZY(杨振宇) ; Lu ZX(卢子兴); Zhao YP(赵亚溥); Zhao YP
|
| 刊名 | Computational Materials Science
 |
| 出版日期 | 2009 |
| 页码 | 142-150 |
| 通讯作者邮箱 | yzhao@imech.ac.cn |
| 关键词 | Molecular Dynamics (Md) Modified Embedded Atom Method (Meam) Nanowires Size-Dependent Yield Strength Molecular-Dynamics Simulation Gold Nanowires Elastic Properties Tensile Behavior Surface-Stress Deformation Ni Amorphization System Strain |
| ISSN号 | 0927-0256 |
| 通讯作者 | Zhao YP |
| 中文摘要 | A simple derivation based on continuum mechanics is given, which shows the surface stress is critical for yield strength at ultra-small scales. Molecular dynamics (MD) simulations with modified embedded atom method (MEAM) are employed to investigate the mechanical behaviors of single-crystalline metal nanowires under tensile loading. The calculated yield strengths increasing with the decrease of the cross-sectional area of the nanowires are in accordance with the theoretical prediction. Reorientation induced by stacking faults is observed at the nanowire edge. In addition. the mechanism of yielding is discussed in details based on the snapshots of defects evolution. The nanowires in different crystallographic orientations behave differently in stretching deformation. This study on the plastic properties of metal nanowires will be helpful to further understanding of the mechanical properties of nanomaterials. (C) 2009 Elsevier B.V. All rights reserved. |
| 类目[WOS] | Materials Science, Multidisciplinary |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | MOLECULAR-DYNAMICS SIMULATION ; GOLD NANOWIRES ; ELASTIC PROPERTIES ; TENSILE BEHAVIOR ; SURFACE-STRESS ; DEFORMATION ; NI ; AMORPHIZATION ; SYSTEM ; STRAIN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000267928700020 |
| 公开日期 | 2009-08-03 ; 2009-10-09 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/26566]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Zhao YP |
| 推荐引用方式 GB/T 7714 | Yang ZY,Lu ZX,Zhao YP,et al. Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires[J]. Computational Materials Science,2009:142-150. |
| APA | 杨振宇,卢子兴,赵亚溥,&Zhao YP.(2009).Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires.Computational Materials Science,142-150. |
| MLA | 杨振宇,et al."Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires".Computational Materials Science (2009):142-150. |
入库方式： OAI收割
来源：力学研究所
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