Numerical Simulation for Shrinkage Hole （Porosity） Formation in TiAl Alloy Product in Investment Casting

Li Bangsheng  1  Wang Kuangfei    1; 2    Wu Shiping  1  Mi Guofa  2  Bi Weisheng  1  Guo Jingjie  1  Fu Hengzhi  1

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Numerical Simulation for Shrinkage Hole （Porosity） Formation in TiAl Alloy Product in Investment Casting
Issue 5, Pages: 280-283(2005)
Published： 2005 ，
DOI：

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[1]李邦盛,王狂飞,吴士平,米国发,毕维升,郭景杰,傅恒志.TiAl合金熔模精铸件缩孔形成的数值模拟及预测[J].特种铸造及有色合金,2005(05):280-283+254.

Li Bangsheng 1 Wang Kuangfei 1, 2 Wu Shiping 1 Mi Guofa 2 Bi Weisheng 1 Guo Jingjie 1 Fu Hengzhi 1. Numerical Simulation for Shrinkage Hole （Porosity） Formation in TiAl Alloy Product in Investment Casting. [J]. Special Casting & Nonferrous Alloys (5):280-283(2005)
[1]李邦盛,王狂飞,吴士平,米国发,毕维升,郭景杰,傅恒志.TiAl合金熔模精铸件缩孔形成的数值模拟及预测[J].特种铸造及有色合金,2005(05):280-283+254. DOI：

Li Bangsheng 1 Wang Kuangfei 1, 2 Wu Shiping 1 Mi Guofa 2 Bi Weisheng 1 Guo Jingjie 1 Fu Hengzhi 1. Numerical Simulation for Shrinkage Hole （Porosity） Formation in TiAl Alloy Product in Investment Casting. [J]. Special Casting & Nonferrous Alloys (5):280-283(2005) DOI：

摘要

提出了广度关联搜索孤立区的新方法

结合等效液面收缩量法对TiAl合金精铸叶片缩孔形成过程进行了数值模拟

并预测了铸件缩孔的大小及产生的位置。采用熔模精铸工艺浇注了TiAl合金叶片

并对铸件进行了解剖

解剖断面与数值模拟结果进行了对比

模拟结果与解剖结果基本符合。表明这种模拟缩孔的方法可以准确地预测缩孔的大小和缩孔的位置。

Abstract

A method of extensive scouting of liquid isolated section combining with the calculation of solidification shrinkage in the equivalent liquid pools was put forward to simulate the shrinkage hole formation in TiAl alloy castings in investment casting

meanwhile

the size and formed location of the shrinkage hole were predicted.The simulated results are well in agreement with the practical results

indicating that the method can accurately predict the size and location of the shrinkage hole.