Knowledge Management System of Institue of Mechanics, CAS
| Microstructure and microhardness in surface-nanocrystalline Al-alloy material | |
Wei YG(魏悦广) ; Wu XL(武晓雷); Zhu C; Zhao MH
| |
| 2007 | |
| Keyword | Microstructure Nanoindentation test Size effect Surface-nanocrystalline Al-alloy TEM observation |
| Other Abstract | Discussed and analyzed are the surface-nanocrystallization of Al-alloy material manufactured by using the ultrasonic shot peening method. The transmission electron microscope (TEM) is used to examine the microstructure features and nanocrystalline mechanisms, such as, the formed microbands, the divided subbands, the infinitesimally divided and formed nanometer-sized grains and grain boundaries, etc. Based on the microscale observation and measurement, the mechanical behaviors of the surface-nanocrystalline Al-alloy material are investigated experimentally at submicron scale by means of the nano-indentation test. The load- and hardness-indent depth curves are measured. The grain size and its nonuniform effects are investigated. In the theoretical modeling, based on the microstructure characteristics and the experimental features, a dislocation pile-up model considering grain size effect based on the Mott theory is presented and used. The experimental hardness-indent depth curves which display the strong size, geometry and nonuniformity effects are successfully modeled and predicted. © 2007 Springer. |
| Source Publication | Multiscaling in Molecular and Continuum Mechanics: Interaction of Time and Size from Macro to Nano: Application to Biology, Physics, Material Science, Mechanics, Structural and Processing Engineering |
| Pages | 369-387 |
| Publisher | Springer Netherlands |
| Language | 英语 |
| ISBN | 978-1-4020-5062-6 |
| Document Type | 图书章节 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85083 |
| Collection | 力学所知识产出(1956-2008) |
| Affiliation | LNM, Institute of Mechanics, Chinese Academy of Sciences, 100080 Beijing, China |
| Recommended Citation GB/T 7714 | Wei YG,Wu XL,Zhu C,et al. Microstructure and microhardness in surface-nanocrystalline Al-alloy material[Ch]. Multiscaling in Molecular and Continuum Mechanics: Interaction of Time and Size from Macro to Nano: Application to Biology, Physics, Material Science, Mechanics, Structural and Processing Engineering,Springer Netherlands,2007. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| ChpA014.pdf（2198KB） | 图书章节 | 开放获取 | CC BY-NC-SA | View Download | ||
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