Microstructure investigation and first-principle analysis of die-cast AZ91 alloy with calcium addition
文献类型：期刊论文
| 作者 | L. Lin ; F. Wang ; L. Yang ; L. J. Chen ; Z. Liu ; Y. M. Wang |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2011 |
| 卷号 | 528期号:15页码:5283-5288 |
| 关键词 | Magnesium alloy Die-casting Microstructure evolution Mechanical property First-principle calculation mechanical-properties phase-equilibria al alloys mg energy creep |
| ISSN号 | 0921-5093 |
| 中文摘要 | In order to get improved mechanical properties of die-cast AZ91 alloy under elevated temperatures. Ca element was added as a cost-effective alloying constituent. It appeared that minor Ca addition less than 0.5 wt% would result in no apparent change in microstructure, but the tensile strength at elevated temperatures was improved considerably. When increasing Ca addition to more than 1.0 wt% Al(2)Ca phase will precipitate during solidification, no Mg(2)Ca phase was discovered. Homogeneous microstructure and high temperature stability in tensile strength of die-cast AZ91 alloy with Ca addition was mainly attributed to the precipitation of Al(2)Ca phase, which considerably refined the bulky beta-Mg(17)Al(12) phase distributed originally at the grain boundaries of die-cast AZ91 alloy with no Ca addition. The priority of Al(2)Ca phase compared to Mg(2)Ca phase in precipitation sequence was verified by first-principle calculation of their cohesive energy and formation enthalpy, and can also be associated with more bounding electrons between Al and Ca atoms. (C) 2011 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/321006/30502]  |
| 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 | L. Lin,F. Wang,L. Yang,et al. Microstructure investigation and first-principle analysis of die-cast AZ91 alloy with calcium addition[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2011,528(15):5283-5288. |
| APA | L. Lin,F. Wang,L. Yang,L. J. Chen,Z. Liu,&Y. M. Wang.(2011).Microstructure investigation and first-principle analysis of die-cast AZ91 alloy with calcium addition.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,528(15),5283-5288. |
| MLA | L. Lin,et al."Microstructure investigation and first-principle analysis of die-cast AZ91 alloy with calcium addition".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 528.15(2011):5283-5288. |
入库方式： OAI收割
来源：金属研究所
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