| We have investigated the effect of heat treatment on tensile properties of SiC_p/Al composites. Heat treatment were carried out at aging of 200℃ upto 30hrs after solid solution treated at 500℃. After heat-treatment, the specific modulus of the composites was observed to be increased as the volume fraction of SiC particle increases. The specific modulus values of composites with 30 vol% SiC particle exhibited the increase portion of 15%, in comparison with the as-fabricated composites, increasing to 127 ㎬ at 30 vol% SiC_p/2024Al composites. Therefore, it is noted that the elastic modulus is a function of the amount of SiC particle. On the other hand, the specific strength value of 10 vol% SiC composites demonstrated the great increase portion of 50% compared with composites with 20 vol% and 30 vol% SiC particle. The specific strength of SiC_p/2024 Al composites was found to be greatly influenced by 2024 Al matrix. |
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