Knowledge Management System of Institue of Mechanics, CAS
| The Uniaxial Tensile Deformation of Ni Nanowire: Atomic-Scale Computer Simulations | |
Wen YH(文玉华); Zhu ZZ; Shao GF; Zhu RC(朱如曾) ; Zhu, ZZ (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
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| Source Publication | Physica E-Low-Dimensional Systems & Nanostructures
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| 2005 | |
| Volume | 27Issue:1Pages:113-120 |
| ISSN | 1386-9477 |
| Abstract | The mechanical deformations of nickel nanowire subjected to uniaxial tensile strain at 300 K are simulated by using molecular dynamics with the quantum corrected Sutten-Chen many-body force field. We have used common neighbor analysis method to investigate the structural evolution of Ni nanowire during the elongation process. For the strain rate of 0.1%/ps, the elastic limit is up to about 11% strain with the yield stress of 8.6 GPa. At the elastic stage, the deformation is carried mainly through the uniform elongation of the distances between the layers (perpendicular to the Z-axis) while the atomic structure remains basically unchanged. With further strain, the slips in the {111} planes start to take place in order to accommodate the applied strain to carry the deformation partially, and subsequently the neck forms. The atomic rearrangements in the neck region result in a zigzag change in the stress-strain curve; the atomic structures beyond the region, however, have no significant changes. With the strain close to the point of the breaking, we observe the formation of a one-atom thick necklace in Ni nanowire. The strain rates have no significant effect on the deformation mechanism, but have some influence on the yield stress, the elastic limit, and the fracture strain of the nanowire. |
| Subject Area | 力学 |
| DOI | 10.1016/j.physe.2004.10.009 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000227813200016 |
| WOS Keyword | MOLECULAR-DYNAMICS ; NANOCRYSTALLINE MATERIALS ; NANOSTRUCTURED MATERIALS ; AMORPHIZATION ; TEMPERATURE ; CRYSTALLIZATION ; METALS ; STRAIN |
| WOS Research Area | Science & Technology - Other Topics ; Physics |
| WOS Subject | Nanoscience & Nanotechnology ; Physics, Condensed Matter |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/16274 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhu, ZZ (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China. |
| Recommended Citation GB/T 7714 | Wen YH,Zhu ZZ,Shao GF,et al. The Uniaxial Tensile Deformation of Ni Nanowire: Atomic-Scale Computer Simulations[J]. Physica E-Low-Dimensional Systems & Nanostructures,2005,27,1,:113-120. |
| APA | 文玉华,Zhu ZZ,Shao GF,朱如曾,&Zhu, ZZ .(2005).The Uniaxial Tensile Deformation of Ni Nanowire: Atomic-Scale Computer Simulations.Physica E-Low-Dimensional Systems & Nanostructures,27(1),113-120. |
| MLA | 文玉华,et al."The Uniaxial Tensile Deformation of Ni Nanowire: Atomic-Scale Computer Simulations".Physica E-Low-Dimensional Systems & Nanostructures 27.1(2005):113-120. |
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