中文摘要：

利用电场凝固技术在Ti-50at％Al合金固相线以上糊状区和液相区内,对其进行稳恒电场处理,通过对比有无电场和对比不同电流密度对合金凝固组织的作用效果,研究电场对合金凝固组织中y相和γ/α2片层组织形态、尺寸的影响规律.结果表明：稳恒电场在靠近电极附近对合金的作用效果最明显;且随着电流密度的增大,Ti-50at％ Al合金的晶粒尺寸逐渐减小.

英文摘要：

By utilizing electric field solidifying technology,the Ti-50at％ Al binary alloy was treat to a steady electric field in its mush zone and above its liquidus.The effects of electric field on morphologies of γ phase and γ/α2 laminar were analyzed through comparing different current densities.Results show that steady electric field makes the most significant difference in refining solidification microstructures of Ti-50at％ Al nearby electrodes.Furthermore,with the increasing current density,the grains of alloy decrease gradually.