| 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.
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| Source Publication | JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
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| 2013-03-01 | |
| Volume | 10Issue:3Pages:714-718 |
| ISSN | 1546-1955 |
| Abstract | 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). |
| Keyword | Nanoindentation Size Effect Dislocation Nucleation Atomic Finite Element Method Instability Criterion |
| Subject Area | 固体力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000315749100033 |
| Funding Organization | National Natural Science Foundation of China [10772096, 11021262, 10932011, 11142005, 11202214, 91116003]; National Basic Research Program of China [2012CB937500] |
| Department | LNM新型材料及结构的多尺度力学 |
| Classification | Q3 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47145 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Liu, 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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