摘要
采用液态搅拌铸造法制备Si C-Al_3Ti协同增强7075铝基复合材料。利用OM、XRD、SEM、直读光谱仪和布氏硬度计,通过正交试验分析了搅拌温度、搅拌速度和搅拌时间等对复合材料中Si C和Al_3Ti分布、收得率及复合材料硬度的影响。结果表明,Si C-Al_3Ti协同增强7075铝基复合材料的最佳搅拌温度为800℃,搅拌速度为450 r/min,搅拌时间为20 min。
The Si C-Al_3Ti co-enhanced 7075 aluminum matrix composites were prepared by liquid stirring casting method.The effect of stirring temperature, stirring speed and stirring time on distribution and yielding rate of Si C and Al_3Ti and the hardness of composites were analyzed by using OM, XRD, SEM, direct reading spectrometer and bush hardness tester. The results show that the optimum stirring temperature, stirring speed, and stirring time are 800 ℃, 450 r/min, and 20 min,respectively.
引文
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