采用液态金属渗透法和复合铸造法制备了非连续纤维增强铝合金复合材料。液态金属渗透法是将液态金属挤压进纤维制成的预制块中;复合铸造法的特点是把粒子材料加入剧烈搅拌下部分凝固的合金浆料。这两种工艺和选用的增强剂成本低廉,并可沿用现有的工艺和设备。将多重增强剂与基体复合是提高复合材料性能的一条新途径。文章还介绍了复合材料发动机活塞的应用情况。 Non-continuous fiber reinforced aluminum alloy composites were prepared by liquid metal infiltration method and compound casting method. Liquid metal infiltration method is the liquid metal extrusion into the fiber prefabricated block; composite casting method is characterized by the particle material is added to the violent agitation of partially solidified alloy slurry. Both of these processes and the choice of enhancers are inexpensive and can use existing processes and equipment. Compounding multiple reinforcements with matrixes is a new way to improve the properties of composites. The article also introduces the application of composite engine pistons.