In this paper , one high temperature gradient directional solidification apparatus with liquid metal cooling ( lmc ) was used . the technology parameter of preparation for ni , cr , al - tac eutectic in - situ composite was optimized 本文采用lmc高温度梯度定向凝固装置,对ni , cr , al - tac共晶自生复合材料进行了深入的研究,优化了该种自生复合材料的制备工艺。