The thermal behavior of atoms in ultrafine-grained Ni processed by severe plastic deformation
文献类型：期刊论文
| 作者 | K. Zhang ; I. V. Alexandrov ; R. Z. Valiev ; K. Lu |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 1998 |
| 卷号 | 84期号:4页码:1924-1927 |
| 关键词 | x-ray-diffraction submicrocrystalline structure copper |
| ISSN号 | 0021-8979 |
| 中文摘要 | X-ray diffraction investigations in a temperature range from 85 to 295 K were performed on an ultrafine-grained (UFG) Ni sample processed by severe plastic deformation. A significantly enhanced thermal expansion coefficient of 3.75x10(-5) K-1 was observed in the UFG Ni sample, which is three times higher than in the conventional coarse-grained Ni polycrystal. The Debye-Waller parameter and its temperature-dependent and temperature-independent components are revealed to be larger in the UFG Ni sample. The obtained Debye temperature in the UFG Ni sample is decreased by 22%. The altered thermal properties in the UFG Ni sample are attributed to the nonequilibrium dislocations that disturb grain boundaries leading to large atomic displacements near interfaces. (C) 1998 American Institute of Physics. [S0021-8979(98)08416-3] |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37869]  |
| 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 | K. Zhang,I. V. Alexandrov,R. Z. Valiev,et al. The thermal behavior of atoms in ultrafine-grained Ni processed by severe plastic deformation[J]. Journal of Applied Physics,1998,84(4):1924-1927. |
| APA | K. Zhang,I. V. Alexandrov,R. Z. Valiev,&K. Lu.(1998).The thermal behavior of atoms in ultrafine-grained Ni processed by severe plastic deformation.Journal of Applied Physics,84(4),1924-1927. |
| MLA | K. Zhang,et al."The thermal behavior of atoms in ultrafine-grained Ni processed by severe plastic deformation".Journal of Applied Physics 84.4(1998):1924-1927. |
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。