Nanoindentation size effect interpreted by the dislocation nucleation mechanism

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	Nanoindentation size effect interpreted by the dislocation nucleation mechanism
	Liu XM(刘小明); Liu Zhanli; Zhang Zuoqi; Zhuang Zhuo; Wei YG(魏悦广); Liu, XM (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
发表期刊	JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
	2013-03-01
卷号	10 期号:3 页码:714-718
ISSN	1546-1955
摘要	The instability criterion of atomic structure is used to investigate the nanoindentation size effect based on the dislocation nucleation mechanism. Both the dislocation nucleation location and the emission direction under indentation can be predicted. The nanoindentation size effect for hardness can be interpreted with a critical condition of the dislocation nucleation through adopting an Atomic Finite Element Method which is associated with the instability criterion. The present results agree well with the analytical solution based on the Rice model. The present results show that the nanoindentation size effect with the flat indenter can be expressed by using the dislocation nucleation concept. From dislocation nucleation point of view, the applied average force (hardness) required for dislocation emission is proportional to the inverse of square root of the width of the nano-indenter (contact zone size).
关键词	Nanoindentation Size Effect Dislocation Nucleation Atomic Finite Element Method Instability Criterion
学科领域	固体力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000315749100033
项目资助者	National Natural Science Foundation of China [10772096, 11021262, 10932011, 11142005, 11202214, 91116003]; National Basic Research Program of China [2012CB937500]
课题组名称	LNM新型材料及结构的多尺度力学
论文分区	Q3
引用统计	被引频次：1[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/311007/47145
专题	非线性力学国家重点实验室
通讯作者	Liu, XM (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Liu XM,Liu Zhanli,Zhang Zuoqi,et al. Nanoindentation size effect interpreted by the dislocation nucleation mechanism[J]. JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE,2013,10,3,:714-718.
APA	Liu XM,Liu Zhanli,Zhang Zuoqi,Zhuang Zhuo,Wei YG,&Liu, XM .(2013).Nanoindentation size effect interpreted by the dislocation nucleation mechanism.JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE,10(3),714-718.
MLA	Liu XM,et al."Nanoindentation size effect interpreted by the dislocation nucleation mechanism".JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE 10.3(2013):714-718.

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