利用元素粉末冶金方法制备了TiAl合金排气阀 . 为提高排气门杆部的致密度、均匀度, 设计了特有的径向热压工艺, 并从理论上分析了与该工艺相关的压坯密度、致密化和应力变化规律. 制备出高径比为10.7, 密度为3.79g/cm3的粉末冶金TiAl合金汽车发动机排气门.
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