对Al ZrOCl2 体系采用熔体反应法制备了Al3Zr( p) 、Al2 O3( p) /A35 6复合材料。结果表明 :原位生成的Al3Zr和Al2 O3 均为多面体粒状 ,且Al3Zr表面存在生长小面 (facet)。复合材料凝固组织中随ZrOCl2 加入量的增加 ,颗粒分数增大 ,颗粒分布更均匀。但反应温度高于 90 0℃时 ,Al3Zr颗粒出现板块状集聚生长。拉伸试验表明 :Al3Zr(p) 、Al2 O3(p) /A35 6复合材料具有比基体更高的抗拉强度 ,并随ZrOCl2 加入量的增加而提高 ,其拉伸断口为混合型断裂 The Al3Zr (p) and Al2O3 (p) / A356 composites were prepared by melt reaction on the Al ZrOCl2 system. The results show that both Al3Zr and Al2O3 formed in situ are polyhedral granular, and the growth facets exist on the Al3Zr surface. With the increase of ZrOCl2 content in the solidified microstructure, the particle fraction increases and the particle distribution is more uniform. However, when the reaction temperature is higher than 90 0 ℃, Al3Zr particles appear agglomerate growth. Tensile tests show that Al3Zr (p), Al2O3 (p) / A356 composites have higher tensile strength than the matrix and increase with the addition of ZrOCl2, and the tensile fracture is mixed fracture