Microstructure and mechanical properties of Mg-Gd-Y-Zr alloy cast by metal mould and lost foam casting
文献类型：期刊论文
| 作者 | J. L. Li ; R. S. Chen ; W. Ke |
| 刊名 | Transactions of Nonferrous Metals Society of China
 |
| 出版日期 | 2011 |
| 卷号 | 21期号:4页码:761-766 |
| 关键词 | Mg-Gd-Y-Zr alloy lost foam casting metal mould casting microstructure mechanical property age-hardening response tensile properties |
| ISSN号 | 1003-6326 |
| 中文摘要 | The microstructure and mechanical properties of Mg-10.1Gd-3.74Y-0.25Zr (mass fraction, %) alloy (GW104 alloy) cast by metal mould casting (MMC) and lost foam casting (LFC) were evaluated, respectively. It is revealed that different forming modes do not influence the phase composition of as-cast alloy. In the as-cast specimens, the microstructures are similar and composed of alpha-Mg solid solution, eutectic compound of alpha-Mg+Mg(24)(Gd, Y)(5) and cuboid-shaped Mg(5)(Gd, Y) phase; whereas the average grain size of the alloy produced by metal mould casting is smaller than that by lost foam casting. The eutectic compound of the alloy is completely dissolved after solution treatment at 525 degrees C for 6 h, while the Mg5(Gd, Y) phase still exists after solution treatment. After peak-ageing, the lost foam cast alloy exhibits the maximum ultimate tensile strength of 285 MPa, and metal mould cast specimen 325 MPa at room temperature, while the tensile yield strengths of them are comparable. It can be concluded that GW104 alloy cast by lost foam casting possesses similar microstructure and evidently lower mechanical strength compared with metal mould cast alloy, due to slow solidification rate and proneness to form shrinkage porosities during lost foam casting process. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30469]  |
| 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 | J. L. Li,R. S. Chen,W. Ke. Microstructure and mechanical properties of Mg-Gd-Y-Zr alloy cast by metal mould and lost foam casting[J]. Transactions of Nonferrous Metals Society of China,2011,21(4):761-766. |
| APA | J. L. Li,R. S. Chen,&W. Ke.(2011).Microstructure and mechanical properties of Mg-Gd-Y-Zr alloy cast by metal mould and lost foam casting.Transactions of Nonferrous Metals Society of China,21(4),761-766. |
| MLA | J. L. Li,et al."Microstructure and mechanical properties of Mg-Gd-Y-Zr alloy cast by metal mould and lost foam casting".Transactions of Nonferrous Metals Society of China 21.4(2011):761-766. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。