IMECH-IR  > 非线性力学国家重点实验室
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.
Source PublicationJOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
2013-03-01
Volume10Issue:3Pages:714-718
ISSN1546-1955
AbstractThe 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).
KeywordNanoindentation Size Effect Dislocation Nucleation Atomic Finite Element Method Instability Criterion
Subject Area固体力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000315749100033
Funding OrganizationNational Natural Science Foundation of China [10772096, 11021262, 10932011, 11142005, 11202214, 91116003]; National Basic Research Program of China [2012CB937500]
DepartmentLNM新型材料及结构的多尺度力学
ClassificationQ3
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47145
Collection非线性力学国家重点实验室
Corresponding AuthorLiu, XM (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
Recommended Citation
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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