Knowledge Management System of Institue of Mechanics, CAS
| Synthesis of nanocrystalline intermetallic layer by mechanical attrition | |
Wu XL(武晓雷) ; Hong YS(洪友士); Tao N; Meng XK; Lu J; Lu K
| |
| Source Publication | TMS Annual Meeting |
| 2006 | |
| Conference Name | 135th TMS Annual Meeting, 2006 |
| Conference Date | March 12, 2006 - March 16, 2006 |
| Conference Place | San Antonio, TX, United states |
| Abstract | By means of the technique of surface mechanical attrition treatment, the nanocrystalline (nc) intermetallic compound Co3Fe7 was synthesized in the surface layer of bulk cobalt. It was found that deformation-induced diffusion occurred, leading to the extension of solid solution. A series of phase transformation proceeded with increasing Fe content (atom percent) and followed the route from hcp (less than 4 percent Fe) to fee (4-11 percent Fe) and finally to bcc (> 11% Fe). Nanoscale composition analyses by EDX showed that Fe contents are significantly higher in grain boundaries and triple junctions than in grain interiors. It was turned out to be the conclusion that fast diffusion along grain boundaries dominate in larger grains whereas diffusion along triple junctions in nc intermetallic grains. The alloying on the atomic level was ascribed to deformation-induced intermixing during deformation at high strain rates. The mechanism of intermetallic formation was a result of numerous nucleation events followed by limited growth. |
| Keyword | Intermetallic Grains Mechanical Attrition Surface Mechanical Attrition Treatment |
| ISBN | 087339626X |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/60291 |
| Collection | 力学所知识产出(1956-2008) |
| Recommended Citation GB/T 7714 | Wu XL,Hong YS,Tao N,et al. Synthesis of nanocrystalline intermetallic layer by mechanical attrition[C]TMS Annual Meeting,2006. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| CaEi054.pdf（1569KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment