Numerical Simulation of Counter Gravity Casting of TiAl Blades

摘要：

The mould filling process and solidification grain structure of TiAl blade by counter gravity casting have been simulated. The fluid field results indicate that an appropriate size of gate can avoid the formation of the regions of jet and vortex. The pouring temperature and mould temperature have no significant effects on the mould filling rate,but will benefit the stable filling of the molten metal) while the pressure rise rate has apparent influences on the filling of the mould. The full columnar grain structure is obtained by a three-dimensional cellular automaton model coupled with finite-element heat flow calculation.

关键词： TiAl alloys casting counter gravity numerical simulation

作者: Y. D. Chu H. Chang Y. J. Zhang H. C. Kou H. Zhong J. S. Li

作者单位: State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xian 710072,China

会议类型: 国际会议

会议名称: The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)

会议地点: 北京

会议语种:英文

页码: 1779-1782

在线出版日期: 2011-06-19（万方平台首次上网日期，不代表论文的发表时间）