Tensile properties and fracture mechanism of Al-Mg alloy subjected to equal channel angular pressing
文献类型：期刊论文
| 作者 | D. R. Fang ; Q. Q. Duan ; N. Q. Zhao ; J. J. Li ; S. D. Wu ; Z. F. Zhang |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2007 |
| 卷号 | 459期号:1-2页码:137-144 |
| 关键词 | Al-Mg alloy equal channel angular pressing (ECAP) strength elongation static toughness hardness shear fracture severe plastic-deformation submicrometer grain-size microstructure ductility temperature refinement extrusion strength behavior |
| ISSN号 | 0921-5093 |
| 中文摘要 | Casting Al-2.77 wt.% Mg alloy was subjected to equal channel angular pressing (ECAP) and subsequent low-temperature annealing treatment. Tensile properties and fracture modes of as-ECAPed and annealed samples were investigated. It is found that the strength of the Al-Mg alloy increases with increasing the number of ECAP passes, while its elongation decreases. After annealing, the elongation is recovered to a large extent, consequently, the static toughness of the alloy is enhanced by a combination of ECAP and annealing treatment. Vickers hardness HV of the Al-Mg alloy monotonously increases with increasing the number of ECAP passes and follows a relationship of HV/sigma(b)approximate to 2.5, independent of the number of ECAP passes. Meanwhile, it is noted that the casting alloy only exhibits necking before failure, while the alloy subjected to ECAP fails in shear mode, with an increasing shear fracture angle at high number of ECAP passes. Besides, the low temperature annealing treatment hardly affects the tensile fracture mode of the ECAPed alloy. Based on the experimental results above, the tensile failure mechanisms of the ECAPed Al-Mg alloy are discussed. (C) 2007 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33522]  |
| 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 | D. R. Fang,Q. Q. Duan,N. Q. Zhao,et al. Tensile properties and fracture mechanism of Al-Mg alloy subjected to equal channel angular pressing[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,459(1-2):137-144. |
| APA | D. R. Fang,Q. Q. Duan,N. Q. Zhao,J. J. Li,S. D. Wu,&Z. F. Zhang.(2007).Tensile properties and fracture mechanism of Al-Mg alloy subjected to equal channel angular pressing.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,459(1-2),137-144. |
| MLA | D. R. Fang,et al."Tensile properties and fracture mechanism of Al-Mg alloy subjected to equal channel angular pressing".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 459.1-2(2007):137-144. |
入库方式： OAI收割
来源：金属研究所
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