The Uniaxial Tensile Deformation of Ni Nanowire: Atomic-Scale Computer Simulations

doi:10.1016/j.physe.2004.10.009

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	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.
发表期刊	Physica E-Low-Dimensional Systems & Nanostructures
	2005
卷号	27 期号:1 页码:113-120
ISSN	1386-9477
摘要	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.
学科领域	力学
DOI	10.1016/j.physe.2004.10.009
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000227813200016
关键词[WOS]	MOLECULAR-DYNAMICS ; NANOCRYSTALLINE MATERIALS ; NANOSTRUCTURED MATERIALS ; AMORPHIZATION ; TEMPERATURE ; CRYSTALLIZATION ; METALS ; STRAIN
WOS研究方向	Science & Technology - Other Topics ; Physics
WOS类目	Nanoscience & Nanotechnology ; Physics, Condensed Matter
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/16274
专题	力学所知识产出(1956-2008)
通讯作者	Zhu, ZZ (reprint author), Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China.
推荐引用方式 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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