采用定向凝固方法制备了Cr/Mo微合金化高Nb Ti-Al合金,并考察了其微观结构和力学性能.结果表明,两种合金都呈现出层片状微观组织.尽管温度梯度受限,抽拉速度较高,但与Ti-16A1-12Nb相比,Ti-16A1-12Nb-3Cr-1Mo合金中的片层倾向于与抽拉方向呈更小角度生长,在室温和650℃时的拉伸强度和塑性均呈显著增加.
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