| Atomistic Simulation On Size-Dependent Yield Strength And Defects Evolution Of Metal Nanowires | |
Yang ZY(杨振宇) ; Lu ZX(卢子兴); Zhao YP(赵亚溥); Zhao YP
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| Source Publication | Computational Materials Science
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| 2009 | |
| Pages | 142-150 |
| ISSN | 0927-0256 |
| Abstract | 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. |
| Keyword | 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 |
| DOI | 10.1016/j.commatsci.2009.02.015 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000267928700020 |
| WOS Keyword | MOLECULAR-DYNAMICS SIMULATION ; GOLD NANOWIRES ; ELASTIC PROPERTIES ; TENSILE BEHAVIOR ; SURFACE-STRESS ; DEFORMATION ; NI ; AMORPHIZATION ; SYSTEM ; STRAIN |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26566 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Zhao YP |
| Recommended Citation 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. |
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