| TiAl基合金叶片吸铸成形缺陷的数值模拟 |
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| 引用本文： | 叶喜葱,苏彦庆,郭景杰,张月红,傅恒志.TiAl基合金叶片吸铸成形缺陷的数值模拟[J].稀有金属材料与工程,2010(2):247-250. |
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| 作者姓名： | 叶喜葱 苏彦庆 郭景杰 张月红 傅恒志 |
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| 作者单位： | 哈尔滨工业大学，黑龙江 哈尔滨 150001 |
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| 基金项目： | 国家自然科学基金(50975060，50271020，50771041)，新世纪优秀人才支持计划(NCET-05-0350)；哈尔滨工业大学优秀团队支持计划 |
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| 摘 要： | 采用有限元软件ProCAST模拟TiAl基合金液在金属型真空吸铸成形铸造工艺中的充型凝固过程，分析在充型凝固过程中产生缺陷的原因，并进行了相关的实验验证。在模拟过程中发现铸件中确实存在模拟预测的缺陷，且缺陷主要集中在叶片隼部，在叶身部位出现少量的缩松缺陷，模拟和实际相吻合。
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| 关 键 词： | 有限元模拟 ProCAST软件 真空吸铸 缩孔 TiAl基合金 |
Numerical Simulation on Suction Casting Defects of TiAl Based Alloy Blade |
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| Ye Xicong,Su Yanqing,Guo Jingjie,Zhang Yuehong and Fu Hengzhi.Numerical Simulation on Suction Casting Defects of TiAl Based Alloy Blade[J].Rare Metal Materials and Engineering,2010(2):247-250. |
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| Authors: | Ye Xicong Su Yanqing Guo Jingjie Zhang Yuehong and Fu Hengzhi |
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| Affiliation: | Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The filling process and solidification of TiAl based alloy blade by suction casting was studied via numerical simulation. The shrinkage defect of TiAl based alloy blade casting was predicted using FEM software ProCAST. The results indicate the cold shut will be decreased with the increase of graphite suction opening diameter and the pouring temperature. With the decrease of the coefficient of heat transfer, the cold shut is reduced. The TiAl blades are obtained by this method. The simulated result tallies well with the actual cast experiment, and lays down a foundation for improving the cast technology of the TiAl based alloy casting. |
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| Keywords: | FEM simulation ProCAST software suction casting shrinkage defect TiAl based alloy |
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