Microstructure evolution and thermal properties in nanocrystalline Cu during mechanical attrition
文献类型：期刊论文
| 作者 | Y. H. Zhao ; K. Lu ; K. Zhang |
| 刊名 | Physical Review B
 |
| 出版日期 | 2002 |
| 卷号 | 66期号:8 |
| 关键词 | crystalline-amorphous transformations different grain sizes x-ray-diffraction thermodynamic properties nanostructure formation metals alloys fe powder transition |
| ISSN号 | 1098-0121 |
| 中文摘要 | The microstructural evolution and thermal properties of nanocrystalline (nc) Cu during mechanical attrition were investigated by using quantitative x-ray-diffraction and thermal analysis techniques. Upon milling of the Cu powders with coarse grains, the grain sizes are found to decrease gradually with the milling time, and remain unchanged at a steady-state value (about 11 nm) with continued milling. The microstrain and the stored enthalpy increase to maximum values during the grain refinement, and decrease then increase to the second maxima and decrease again within the milling stage of steady-state grain size, while the lattice parameter remains unchanged during the entire milling process. The grain boundary (GB) enthalpy of the nc Cu was estimated, showing a GB softening-hardening-softening cyclic variation within the steady-state milling. The present work indicated with clear experimental evidence that even within the milling stage of steady-state grain size, the microstructure (both the GB's and the crystallites) of nc materials is still changing, which may result from the GB sliding. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36571]  |
| 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 | Y. H. Zhao,K. Lu,K. Zhang. Microstructure evolution and thermal properties in nanocrystalline Cu during mechanical attrition[J]. Physical Review B,2002,66(8). |
| APA | Y. H. Zhao,K. Lu,&K. Zhang.(2002).Microstructure evolution and thermal properties in nanocrystalline Cu during mechanical attrition.Physical Review B,66(8). |
| MLA | Y. H. Zhao,et al."Microstructure evolution and thermal properties in nanocrystalline Cu during mechanical attrition".Physical Review B 66.8(2002). |
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。