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美国匹兹堡Alcoa公司用粉末冶金法生产的铝基复合材料可按顾客所要求的物理机械性能供货。他们的产品主要是SiC颗粒增强的铝基复合材料。基体合金成份为Al-3.8％Cu-1.8％Mg-0.2％Zr,用气体雾化快速凝固的方法制成,是球状细粉,具有非常细致的微观组织,SiC颗粒组份可从15％到25％。材料有很高的弹性模量和耐磨性,也有相当高的强度和断裂韧性,根据测定,弹性模量达100～110GPa,断裂
Alcoa, Pittsburgh, USA Aluminum matrix composites produced by powder metallurgy are available to customers for their physical and mechanical properties. Their products are mainly SiC particle reinforced aluminum matrix composites. The base alloy composition is Al-3.8% Cu-1.8% Mg-0.2% Zr, which is made by gas atomization and rapid solidification. It is a spherical fine powder with very fine microstructure. The SiC particles can range from 15% 25%. The material has a high elastic modulus and wear resistance, but also has a very high strength and fracture toughness, according to the determination, the elastic modulus of 100 ~ 110GPa, fracture