Superplastic behaviors of a Mg-Zn-Y-Zr alloy processed by extrusion and equal channel angular extrusion
文献类型：期刊论文
| 作者 | W. N. Tang ; R. S. Chen ; E. H. Han |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2009 |
| 卷号 | 477期号:1-2页码:636-643 |
| 关键词 | Mg-Zn-Y-Zr alloy Extrusion ECAE Inhomogeneous microstructure Superplasticity high-temperature deformation quasi-crystalline particles az91 magnesium alloy 2-stage deformation az31 evolution sheet flow |
| ISSN号 | 0925-8388 |
| 中文摘要 | Superplastic deformation (SPD) behaviors of a Mg-5.8%Zn-1.0%Y-0.48%Zr alloys produced by conventional extrusion and equal channel angular extrusion (ECAE) methods, respectively, have been comparatively studied in this paper. It is found that the optimum superplastic condition in as-extruded alloy was obtained at 450 degrees C and 3.3 X 10(-4) s(-1) with the largest elongation to failure about 450%; while in as-ECAEed alloy it was at 350 degrees C and 1.7 x 10(-3) s(-1) with about 800% elongation. Microstructural observations showed that structure evolution and cavity formation behaviors were different in these two materials during SPD. The probable mechanisms for superplasticity such as grain boundary sliding (GBS) and dynamic recrystallization (DRX) under different deformation conditions were discussed in terms of strain rate sensitivity, activation energy, as well as microstructural evolution. (c) 2008 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32324]  |
| 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 | W. N. Tang,R. S. Chen,E. H. Han. Superplastic behaviors of a Mg-Zn-Y-Zr alloy processed by extrusion and equal channel angular extrusion[J]. Journal of Alloys and Compounds,2009,477(1-2):636-643. |
| APA | W. N. Tang,R. S. Chen,&E. H. Han.(2009).Superplastic behaviors of a Mg-Zn-Y-Zr alloy processed by extrusion and equal channel angular extrusion.Journal of Alloys and Compounds,477(1-2),636-643. |
| MLA | W. N. Tang,et al."Superplastic behaviors of a Mg-Zn-Y-Zr alloy processed by extrusion and equal channel angular extrusion".Journal of Alloys and Compounds 477.1-2(2009):636-643. |
入库方式： OAI收割
来源：金属研究所
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