Deformation mechanisms of face-centered-cubic metal nanowires with twin boundaries
文献类型：期刊论文
| 作者 | Cao AJ(曹阿静) ; Wei YG(魏悦广); Mao SX
|
| 刊名 | Applied Physics Letters
 |
| 出版日期 | 2007 |
| 卷号 | 90期号:15页码:151909 |
| 通讯作者邮箱 | chaoajing@lnm.imech.ac.cn ; ywei@lnm.imech.ac.cn ; smao@engr.pitt.edu |
| 关键词 | Molecular-Dynamics Gold Nanowires Cu Nanowires Strength Al Simulations Stress |
| ISSN号 | 0003-6951 |
| 通讯作者 | Cao, AJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China. |
| 中文摘要 | This letter addresses the issue of deformation mechanisms and mechanical tensile behavior of the twinned metal nanowires using atomistic simulations. Free surfaces are always the preferential dislocation nucleation sites in the initial inelastic deformation stage, while with further plastic deformation, twin boundary interfaces will act as sources of dislocations with the assistance of the newly formed defects. The smaller the twin boundary spacing, the higher the yielding stresses of the twinned nanowires. Twin boundaries, which serve both as obstacles to dislocation motion and dislocation sources, can lead to hardening effects and contribute to the tensile ductility. This work illustrates that the mechanical properties of metal nanowires could be controlled by tailoring internal growth twin structures. (c) 2007 American Institute of Physics. |
| 类目[WOS] | Physics, Applied |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | MOLECULAR-DYNAMICS ; GOLD NANOWIRES ; CU NANOWIRES ; STRENGTH ; AL ; SIMULATIONS ; STRESS |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000245690700038 |
| 公开日期 | 2009-08-03 ; 2010-06-13 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/34007]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Cao AJ,Wei YG,Mao SX. Deformation mechanisms of face-centered-cubic metal nanowires with twin boundaries[J]. Applied Physics Letters,2007,90(15):151909. |
| APA | 曹阿静,魏悦广,&Mao SX.(2007).Deformation mechanisms of face-centered-cubic metal nanowires with twin boundaries.Applied Physics Letters,90(15),151909. |
| MLA | 曹阿静,et al."Deformation mechanisms of face-centered-cubic metal nanowires with twin boundaries".Applied Physics Letters 90.15(2007):151909. |
入库方式： OAI收割
来源：力学研究所
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