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采用熔铸法制备了石墨－铝硅复合材料。金相显微镜测试结果表明，用这种方法能将裸体石墨均匀地分布到铝－硅合金中；性能测试结果表明，石墨－铝硅复合材料的常温抗拉强度略低于铝硅合金基材，但高温抗拉强度高于基材；热膨胀系数、磨损量都小于基体材料。通过研究还发现，ＧＭＣ－３复合材料在３００℃时的强度高于在２００℃时的强度，并具有较高的延伸率，是制造内燃机活塞的较理想材料。
Graphite-Al-Si composites were prepared by casting method. The results of metallographic microscope test showed that the naked graphite can be uniformly distributed into the aluminum-silicon alloy by this method. The results of the performance test show that the tensile strength at room temperature of the graphite-aluminum-silicon composite is slightly lower than that of the aluminum-silicon alloy substrate, But high temperature tensile strength higher than the substrate; thermal expansion coefficient, wear less than the matrix material. The study also found that, GMC-3 composite material at 300 ℃ higher than at 200 ℃ when the intensity, and has a high elongation, is the ideal material for the manufacture of internal combustion engine piston.