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Microstructure and Evolution of Mechanically-Induced Ultrafine Grain in Surface Layer of Al-Alloy Subjected to USSP
文献类型：期刊论文
| 作者 | Wu XL(武晓雷) ; Tao N; Hong YS(洪友士); XU B; LU J; Lu K
|
| 刊名 | Acta Materialia
 |
| 出版日期 | 2002 |
| 卷号 | 50期号:8页码:2075-2084 |
| ISSN号 | 1359-6454 |
| 通讯作者 | Wu, X (reprint author), Cleveland State Univ, Dept Chem Engn, 1960 E24th St,SH455, Cleveland, OH 44115 USA. |
| 英文摘要 | Experiments were conducted to investigate the ultrafine-grained (UFG) microstructures in the surface layer of an aluminum alloy 7075 heavily worked by ultrasonic shot peening. Conventional and high-resolution electron microscopy was performed at various depths of the deformed layer. Results showed that UFG structures were introdued into the surface layer of 62 μm thick. With increasing strain, the various microstructural features, e.g., the dislocation emission source, elongated microbands, dislocation cells, dislocation cell blocks, equiaxed submicro-, and nano-crystal grains etc., were successively produced. The grain subdivision into the subgrains was found to be the main mechanism responsible for grain refinement. The simultaneous evolution of high boundary misorientations was ascribed to the subgrain boundary rotation for accommodating further strains. Formed microstructures were highly nonequilibratory. 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved. |
| 学科主题 | 力学 |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | RESOLUTION ELECTRON-MICROSCOPY ; NANOCRYSTALLINE MATERIALS ; PLASTIC-DEFORMATION ; REFINEMENT ; COPPER ; SHEAR ; STEEL ; CU |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000175760200013 |
| 公开日期 | 2007-06-15 ; 2007-12-05 ; 2009-06-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/16150]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Wu XL,Tao N,Hong YS,et al. Microstructure and Evolution of Mechanically-Induced Ultrafine Grain in Surface Layer of Al-Alloy Subjected to USSP[J]. Acta Materialia,2002,50(8):2075-2084. |
| APA | 武晓雷,Tao N,洪友士,XU B,LU J,&Lu K.(2002).Microstructure and Evolution of Mechanically-Induced Ultrafine Grain in Surface Layer of Al-Alloy Subjected to USSP.Acta Materialia,50(8),2075-2084. |
| MLA | 武晓雷,et al."Microstructure and Evolution of Mechanically-Induced Ultrafine Grain in Surface Layer of Al-Alloy Subjected to USSP".Acta Materialia 50.8(2002):2075-2084. |
入库方式： OAI收割
来源：力学研究所
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