Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy

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	Dislocation structure evolution and characterization in the compression deformed Mn-Cu alloy
	Y. Zhong; F. Yin; T. Sakaguchi; K. Nagai; K. Yang
	2007
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	55 期号:8 页码:2747-2756
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.
部门归属	natl inst mat sci, innovat mat engn lab, tsukuba, ibaraki 3050047, japan. toyota motors cp, higashifuji tech ctr, shizuoka 4101193, japan. chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhong, y (reprint author), natl inst mat sci, innovat mat engn lab, tsukuba, ibaraki 3050047, japan;zhong.yong@nims.go.jp
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
URL	查看原文
WOS记录号	WOS:000246460500018
引用统计	被引频次：90[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34099
专题	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.