Formation of Fivefold Deformation Twins in Nanocrystalline Face-Centered-Cubic Copper Based on Molecular Dynamics Simulations

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	Formation of Fivefold Deformation Twins in Nanocrystalline Face-Centered-Cubic Copper Based on Molecular Dynamics Simulations
	Cao AJ(曹阿静); Wei YG(魏悦广)
刊名	Applied Physics Letters
	2006
通讯作者邮箱	chaoajing@lnm.imech.ac.cn ; ywei@lnm.imech.ac.cn
卷号	89 期号:4 页码:041919
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	Fivefold deformation twins were reported recently to be observed in the experiment of the nanocrystalline face-centered-cubic metals and alloys. However, they were not predicted previously based on the molecular dynamics (MD) simulations and the reason was thought to be a uniaxial tension considered in the simulations. In the present investigation, through introducing pretwins in grain regions, using the MD simulations, the authors predict out the fivefold deformation twins in the grain regions of the nanocrystal grain cell, which undergoes a uniaxial tension. It is shown in their simulation results that series of Shockley partial dislocations emitted from grain boundaries provide sequential twining mechanism, which results in fivefold deformation twins. (c) 2006 American Institute of Physics.
学科主题	力学
类目[WOS]	Physics, Applied
研究领域[WOS]	Physics
关键词[WOS]	EMBEDDED-ATOM-METHOD ; PLASTIC-DEFORMATION ; METALS ; NUCLEATION ; STRENGTH ; SYSTEMS ; AL
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000239376500052
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16007]
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. Formation of Fivefold Deformation Twins in Nanocrystalline Face-Centered-Cubic Copper Based on Molecular Dynamics Simulations[J]. Applied Physics Letters,2006,89(4):041919.
APA	曹阿静,&魏悦广.(2006).Formation of Fivefold Deformation Twins in Nanocrystalline Face-Centered-Cubic Copper Based on Molecular Dynamics Simulations.Applied Physics Letters,89(4),041919.
MLA	曹阿静,et al."Formation of Fivefold Deformation Twins in Nanocrystalline Face-Centered-Cubic Copper Based on Molecular Dynamics Simulations".Applied Physics Letters 89.4(2006):041919.