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γ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。
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.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2013年第5期41-45,共5页
Journal of Aeronautical Materials
基金
国家自然科学基金(51171053)
黑龙江省科技攻关项目(2009AA4AG015)
关键词
稳恒电场
Ti-50at％
AL
凝固组织
电流密度
steady electric field
Ti-50at％ Al
solidification microstructures
current density
