研究结果表明，Ａｌ－３Ｌｉ－１Ｃｕ－Ｚｒ合金显示出较高的体收缩和线收缩特性，随着浇注温度和铸型温度的提高，该合金的体积收缩增加，其线收缩为１．６６８％，略高于ＺＬ１０９合金的１．２％，其值受浇注温度的影响不大；铝锂铜锆合金的热裂倾向性较大，浇注温度的影响没有简单的规律性；稀土Ｃｅ的加入，可使晶粒细化，降低热裂倾向性 The results show that Al-3Li-1Cu-Zr alloy shows high volume shrinkage and linear shrinkage. With the increase of pouring temperature and mold temperature, the volume shrinkage of the alloy increases with the linear shrinkage of 1.668% , Slightly higher than 1.2% of ZL109 alloy, and its value is not affected by the pouring temperature. The hot cracking tendency of Al-Li-Cu-Zr alloy is larger and the influence of pouring temperature is not simple regularity. Grain refinement can reduce the hot cracking tendency