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采用粉末冶金法制备了SiC体积分数为30%的SiC_P/6061Al复合材料。分析了该复合材料加热过程的热化学变化和烧结后的相产物。观察了该复合材料的显微组织。测试了该复合材料的密度和力学性能。研究了烧结温度对该复合材料组织和性能的影响。结果表明:制备SiC_P/6061Al复合材料合适的烧结温度为550~605℃。随烧结温度的提高,复合材料的密度和抗拉强度均增大;在600℃烧结时制备的复合材料的基体与增强体的界面结合情况良好。
The SiC_P / 6061Al composites with SiC volume fraction of 30% were prepared by powder metallurgy. The thermochemical changes of the composite during heating and the phase products after sintering were analyzed. The microstructure of the composite was observed. The composites were tested for density and mechanical properties. The effect of sintering temperature on the microstructure and properties of the composites was investigated. The results show that the proper sintering temperature of SiC_P / 6061Al composites is 550 ~ 605 ℃. With the increase of sintering temperature, the density and tensile strength of the composites increase. The interfacial bonding of matrix and reinforcements prepared by sintering at 600 ℃ is good.