中文摘要：

修改钛合金的团结微观结构的一个新方法，说出融化加氢由在融化过程(主义)的正式就职颅骨期间作为添加剂增加 TiH2 进钛合金的melt ，被提出， Ti-6Al-4V 合金的团结微观结构上的这个方法的精制效果试验性地被学习。在以后融化加氢，当演员组 Ti-6Al-4V 合金的谷物尺寸从 1,072 m 减少了到 612 m ，塑造板条一个阶段也被精制并且罚款/当 1.0 wt.% TiH2 是增加氢化物的时，薄片状的微观结构被形成在与 1.0 wt.% TiH2 准备了的 Ti-6Al-4V 合金的系列增加了的X光检查衍射( XRD )被发现，氢化物散布在分阶段执行同样针状的猛冲。

英文摘要：

A new method to modify the solidification microstructure of titanium alloys, named melt hydrogenation, by adding TiH2 as additive into the melt of titanium alloys during induction skull melting process （ISM）, is put forward and the refining effect of this method on the solidification microstructure of Ti-6Al-4V alloy was studied experimentally. After melt hydrogenation, the grain sizes of as-cast Ti-6Al-4V alloy decreased to 612 μm from 1,072 μm, lath-shaped α phase was also refined and fine α/β lamellar microstructure was formed when 1.0 wt.% TiH2 was added. δ-hydride was found in the X-ray diffraction （XRD） spectra of Ti-6Al-4V alloy that prepared with 1.0 wt.% TiH2 added and the δ-hydride distributes in α phase as acicular precipitations.