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 | X. Wu ; N. Tao ; Y. Hong ; B. Xu ; J. Lu ; K. Lu |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2002 |
| 卷号 | 50期号:8页码:2075-2084 |
| 关键词 | nanocrylstalline microstructure aluminium transmission electron microscopy (TEM) resolution electron-microscopy nanocrystalline materials plastic-deformation refinement copper shear steel cu |
| ISSN号 | 1359-6454 |
| 中文摘要 | 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 per-formed at various depth, of the deformed layer. Results showed that UFG structures were introdued into the surface layer of 62 mum 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 inicrostructures were highly nonequilibratory. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36460]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. Wu,N. Tao,Y. Hong,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 | X. Wu,N. Tao,Y. Hong,B. Xu,J. Lu,&K. Lu.(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 | X. Wu,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：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。