| Filling and solidification of TiAl melt in centrifugal field |
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| 引用本文： | 盛文斌. Filling and solidification of TiAl melt in centrifugal field[J]. 中国有色金属学会会刊, 2006, 16(B02): 719-722 |
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| 作者姓名： | 盛文斌 |
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| 作者单位： | Department of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China |
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| 基金项目： | Project（4040-304019） supported by Shandong University of Technology of China |
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| 摘 要： |
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| 关 键 词： | 钛铝基合金 TiAl熔体 浇注 凝固 模型 离心场 铸件缺陷 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-25 |
Filling and solidification of TiAl melt in centrifugal field |
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| SHENG Wen-bin. Filling and solidification of TiAl melt in centrifugal field[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(B02): 719-722 |
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| Authors: | SHENG Wen-bin |
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| Abstract: | A model was established based on the combination of the equation of continuity, the equation of conservation of momentum and the equation of general energy to describe the filling and solidification of TiAl melt by permanent mold centrifugal casting. The model was solved numerically and the filling and solidification processes in the centrifugal field were discussed. The results indicate that the centrifugal field essentially influences the filling and solidification processes of TiAl melt. The melt will first fill the cavity along the back boundary until it reaches the end. After the end is fully filled, the whole cavity will be filled gradually by the way that free surface of the melt moves towards the entrance, hence the entrance is the last part to be filled. Furthermore, the mechanism by which internal defects can be formed in centrifugally cast TiAl components were interpreted. |
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| Keywords: | TiAl melt filling and solidification model centrifugal field defects |
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