| Effect of vacuum on solidification process and microstructure of LFC magnesium alloy |
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| 引用本文： | 刘子利 刘希琴 徐江 郭华明 潘青林 周海涛. Effect of vacuum on solidification process and microstructure of LFC magnesium alloy[J]. 中国有色金属学会会刊, 2006, 16(A03): 1685-1689 |
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| 作者姓名： | 刘子利 刘希琴 徐江 郭华明 潘青林 周海涛 |
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| 作者单位： | [1]College of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 [2]School of Materials Science and Engineering, Central South University, Changsha 410083, China |
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| 基金项目： | Foundation item： Project （2005037697） supported by China Postdoctoral Science Foundation; project （Y04850-61） supported by Creative Program of Nanjing University of Aeronautics and Astronautics |
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| 摘 要： | Lost foam casting （LFC） is regarded as a cost-effective, environment-friendly vital option to the conventional casting process for production of near-net shape castings with high quality. Effect of vacuum on the solidification process and microstructure of LFC magnesium alloy were explored. The results indicate that vacuum plays a very important role in the heat transfer during mould filling and solidification periods, it increases the cooling rate of the filling melt, but greatly decreases the cooling rate of the casting during solidification period, and the solidification time of the casting is greater than that without vacuum. The microstructure of LFC magnesium alloy is rather coarse. Compared with that without vacuum, the microstructure of the LFC magnesium alloy under vacuum is more refined and has less precipitated β-phase, which is formed at the grain boundry and around the Al-Mn compound particle.
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| 关 键 词： | 凝固作用 真空技术 微观结构 镁合金 金属铸造 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Effect of vacuum on solidification process and microstructure of LFC magnesium alloy |
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| LIU Zi-li, LIU Xi-qin, XU Jiang, GUO Hua-ming, PAN Qing-lin, ZHOU Hai-tao. Effect of vacuum on solidification process and microstructure of LFC magnesium alloy[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(A03): 1685-1689 |
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| Authors: | LIU Zi-li LIU Xi-qin XU Jiang GUO Hua-ming PAN Qing-lin ZHOU Hai-tao |
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| Abstract: | |
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| Keywords: | magnesium alloy lost foam casting vacuum solidification process microstructure |
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