Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy
文献类型：期刊论文
| 作者 | Y. Zhong ; F. Yin ; T. Sakaguchi ; K. Nagai ; K. Yang |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2007 |
| 卷号 | 55期号:8页码:2747-2756 |
| 关键词 | Mn-Cu alloy X-ray diffraction electron backscatter diffraction dislocation stacking fault energy stacking-fault energy line-profile analysis shape-memory alloys x-ray-diffraction electron-microscopy fcc metals crystals contrast behavior polycrystals |
| ISSN号 | 1359-6454 |
| 中文摘要 | Dislocation densities and dislocation structure arrangements in cold compressed polycrystalline commercial M2052 (Mn-20Cu-5Ni-2Fe) high damping alloy with various strains were determined in scanning mode by X-ray peak profile analysis and electron backscatter diffraction (EBSD). The results indicate that the Mn-Cu-Ni-Fe alloy has an evolution behavior quite similar to the dislocation structure in copper. The dislocation arrangement parameter shows a local minimum in the transition range between stages III and IV that can be related to the transformation of the dislocation arrangement in the cell walls from a polarized dipole wall (PDW) into a polarized tile wall (PTW) structure. This evolution is further confirmed by the results of local misorientation determined by EBSD. In addition, during deformation, the multiplication of dislocation densities in the MnCu alloy is significantly slower than that in copper, and the transition of the dislocation structure is strongly retarded in the MnCu alloy compared with copper. These results can be explained by the mechanism of elastic anisotropy on the dislocation dynamics, as the elastic anisotropy in the MnCu alloy is larger than that in copper, which can strongly retard the multiplication of the dislocation population and the transformation of the dislocation structure. These results are important for research into the plastic working behavior of Mn-Cu-Ni-Fe high damping alloy. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34099]  |
| 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. Zhong,F. Yin,T. Sakaguchi,et al. Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy[J]. Acta Materialia,2007,55(8):2747-2756. |
| APA | Y. Zhong,F. Yin,T. Sakaguchi,K. Nagai,&K. Yang.(2007).Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy.Acta Materialia,55(8),2747-2756. |
| MLA | Y. Zhong,et al."Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy".Acta Materialia 55.8(2007):2747-2756. |
入库方式： OAI收割
来源：金属研究所
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