Atomistic Simulations of the Mechanical Behavior of Fivefold Twinned Nanowires

doi:10.1103/PhysRevB.74.214108

IMECH-IR > 力学所知识产出(1956-2008)

	Atomistic Simulations of the Mechanical Behavior of Fivefold Twinned Nanowires
	Cao AJ(曹阿静); Wei YG(魏悦广); Cao, AJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
发表期刊	Physical Review B
	2006
卷号	74 期号:21 页码:214108
ISSN	1098-0121
摘要	Atomistic simulations are used to investigate the mechanical behavior of metal nanowire with fivefold twinned structure. The twinned nanowires were reported in recent experiments [B. Wu et al., Nano Lett. 6, 468 (2006)]. In the present paper, we find that the yield strength of the fivefold twinned Cu nanowire is 1.3 GPa higher than that of the face-centered-cubic (fcc) < 110 > single crystalline Cu nanowire without fivefold twinned structure, and the microstructure-hardened mechanism is primarily due to the twinned boundaries which act as the barriers for the dislocation emission and propagation. However, we also find that the fivefold twinned Cu nanowire has lower ductility than that of fcc < 110 > single crystalline Cu nanowire without the twinned structure, and this is mainly attributed to the scarcity and low mobility of dislocations. In addition, in our simulations the effect of preexisting stacking faults and dislocations on strength of the fivefold twinned nanowires is investigated.
学科领域	力学
DOI	10.1103/PhysRevB.74.214108
收录类别	SCI
语种	英语
WOS记录号	WOS:000243195500030
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
引用统计	被引频次：96[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/311007/17270
专题	力学所知识产出(1956-2008)
通讯作者	Cao, AJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Cao AJ,Wei YG,Cao, AJ . Atomistic Simulations of the Mechanical Behavior of Fivefold Twinned Nanowires[J]. Physical Review B,2006,74,21,:214108.
APA	曹阿静,魏悦广,&Cao, AJ .(2006).Atomistic Simulations of the Mechanical Behavior of Fivefold Twinned Nanowires.Physical Review B,74(21),214108.
MLA	曹阿静,et al."Atomistic Simulations of the Mechanical Behavior of Fivefold Twinned Nanowires".Physical Review B 74.21(2006):214108.

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