Knowledge Management System of Institue of Mechanics, CAS
| Size, Geometry and Nonuniformity Effects of Surface-Nanocrystalline Aluminum in Nanoindentation Test | |
Wei YG(魏悦广) ; Shu SQ(舒思齐); Du Y(杜莹); Zhu C(朱晨); Wei, YG (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
| |
| Source Publication | International Journal of Plasticity
 |
| 2005 | |
| Volume | 21Issue:11Pages:2089-2106 |
| ISSN | 0749-6419 |
| Abstract | In the present research, the mechanical behavior of the surface-nanocrystalline aluminum (SNCA) is investigated through nanoindentation experiment and theoretical modeling. Firstly, through microscopical observation and measurement for the SNCA material, a microstructure cell model is developed. Secondly, based on the microstructure cell model and the strain gradient plasticity theory, and based on introducing a parameter accounting for the grain size nonuniformity effect, the discrete features of the hardness-depth relations of the SNCA material are described. The "U-type" feature of the hardness-depth experimental curves is modeled and simulated. Thirdly, in the SNCA material the mechanical property of the grain boundary, i.e., the strength of plastic zone penetrating the grain boundary is characterized by introducing a criterion parameter, the critical effective plastic strain. The "waterfall-type" feature of the hardness-depth curves is modeled and simulated. It is worth pointing out that, in the present study, the length scale parameter in the strain gradient plasticity theory is taken as a universal material parameter instead of a simulation parameter, and it is determined through applying the strain gradient plasticity theory to the modeling of the corresponding single crystal aluminum. |
| Subject Area | 力学 |
| DOI | 10.1016/j.ijplas.2005.04.002 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000231103900004 |
| WOS Keyword | STRAIN GRADIENT PLASTICITY ; LENGTH SCALE ; INDENTATION EXPERIMENTS ; METALLIC MATERIALS ; MICRO-INDENTATION ; DEFORMATION ; DAMAGE ; MECHANICS ; HARDNESS ; SOLIDS |
| WOS Research Area | Engineering ; Materials Science ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/15532 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wei, YG (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Wei YG,Shu SQ,Du Y,et al. Size, Geometry and Nonuniformity Effects of Surface-Nanocrystalline Aluminum in Nanoindentation Test[J]. International Journal of Plasticity,2005,21,11,:2089-2106. |
| APA | 魏悦广,舒思齐,杜莹,朱晨,&Wei, YG .(2005).Size, Geometry and Nonuniformity Effects of Surface-Nanocrystalline Aluminum in Nanoindentation Test.International Journal of Plasticity,21(11),2089-2106. |
| MLA | 魏悦广,et al."Size, Geometry and Nonuniformity Effects of Surface-Nanocrystalline Aluminum in Nanoindentation Test".International Journal of Plasticity 21.11(2005):2089-2106. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| id05_107.pdf（595KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment