合金元素对Ti-46Al-8Nb合金充型性能的影响

Effects of Alloy Elements on the Mold Filling Capacity of Ti-46Al-8Nb Alloy

摘要:

采用网状式样法制备包埋料型壳，对比研究了B、Y、Mn和Er等微合金元素对Ti-46Al-8Nb合金熔体铸造充型性能的影响。研究结果表明：添加微量元素B、Y、Mn、Er等均会对Ti-46Al-8Nb合金熔体铸造充型性能产生一定程度的改善作用。其中，0.5Y和1Mn改善作用十分明显，其加入使充填率分别增加了54.5%和48.5%。0.1Er、0.5B和1B对该合金充型性能的改善作用较为一般，其加入使充填率分别增加了3.0%、4.5%和5.3%。

Abstract:

Embedded material shell was prepared using wax grid with 8? mesh. The effects of micro-alloy elements B, Y, Mn and Er on the mold filling capacity of Ti-46Al-8Nb melt were studied. The results showed that the fluidity and mold filling property of Ti-46Al-8Nb melt was improved to some extent by B, Y, Mn and Er addition. Especially, 0.5Y and 1Mn addition had significant improvement on the mold filling capacity of the alloy, which increased the filling rate by 54.5% and 48.5% respectively. The effect of 0.1Er, 0.5B and 1B addition on the mold filling capacity of the alloy was not so remarkable, with the filling rate increasing by 3.0%, 4.5% and 5.3% respectively.