γ-TiAl增压涡轮熔模铸造过程数值模拟研究

稀有金属材料与工程, 2003, 32(3): 164-169.

γ-TiAl增压涡轮熔模铸造过程数值模拟研究

梁作俭 ^1, , 许庆彦 ^2, , 李俊涛 ^3, , 李世琼 ^4, , 张继 ^5, , 柳百成 ^6, , 仲增墉 ^7,

1.清华大学,北京,100084

2.清华大学,北京,100084

3.北京钢铁研究总院,北京,100081

4.北京钢铁研究总院,北京,100081

5.北京钢铁研究总院,北京,100081

6.清华大学,北京,100084

7.北京钢铁研究总院,北京,100081

基金项目: 国家重点基础研究发展计划(973计划)(G2000067208-3) 国家自然科学基金(59990473) 清华大学校科研和教改项目

关键词： γ-TTil , 数值模拟 , 熔模铸造 , 收缩缺陷 , 增压涡轮

Research on Numerical Simulation of Investment Casting Process for Gamma Titanium Aluminide Turbocharger

根据熔模型壳离心浇注的铸造工艺特点,建立了γ-TiAl增压涡轮凝固传热过程的数值模型,推导了离心压力下γ-TiAl金属间化合物的凝固收缩和补缩过程数学模型,模拟计算了γ-TiAl增压涡轮铸件的温度场和收缩缺陷.结果表明,模型能可靠计算γ-TiAl增压涡轮铸件凝固过程的温度分布和准确预测铸件的收缩缺陷,数值模拟结果与实验结果吻合良好.数值模拟结果证实了前期工作所提出的进一步减少及消除收缩缺陷的优化工艺措施的合理性.

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材料期刊网

γ-TiAl增压涡轮熔模铸造过程数值模拟研究

Research on Numerical Simulation of Investment Casting Process for Gamma Titanium Aluminide Turbocharger

参考文献