WATER-COOLING CRUCIBLE VACUUM INDUCTION MELTING OF γ-TiAl BASED ALLOYS

来源期刊：中国有色金属学报(英文版)1998年第1期

论文作者：Su Yanqing Guo Jingjie Ding Hongsheng Wang Tongmin Zhu Hanliang Jia Jun

文章页码：69 - 72

Key words：γ-TiAl;　cold crucible;　induction melting;　skull

Abstract: Water-cooling crucible vacuum induction melting is a good method for melting reactive alloys, the molten metal prepared has a homogenous composition, temperature and degree of superheating. The melting procedure of theγ-TiAl based alloys melted with water-cooling crucible vacuum induction melting furnace was studied and the results showed that the non-uniform composition in the skull determined by the forming processing of the skull and the evaporation of alloying elements with higher vapor pressure results in a composition difference between nominal and analyzing composition. There would be a sedimentation of large density alloying element in the molten metal because of density difference. The problem above mentioned can be solved by controlling the melting parameters and applying master alloy.