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中文摘要：
采用半固态金属-增强相混合工艺制备SiC颗粒体积分数为10%的SiC_P/7085铝基复合材料,研究微米SiC颗粒在机械搅拌、超声搅拌和复合搅拌等工况下在7085铝基体中的分布规律以及不同制备工艺对SiC_P/7085复合材料拉伸性能的影响规律。结果表明：机械搅拌能够改善颗粒分布的均匀性,但同时会增加气孔缺陷;超声搅拌能有效减少复合材料中的气孔数量;采用复合搅拌工艺（30min机械搅拌＋30 min超声搅拌）制备的SiC_P/7085复合材料颗粒分布均匀、气孔显著减少,抗拉强度较基体合金有较大提高,其中SiC颗粒尺寸为80、30μm的复合材料的最大抗拉强度较基体分别提高了57%和67%。
英文摘要：
By adopting hybrid process of semi-solid metal and reinforced phase, 10%SiCd7085 Ai-based composite was fabricated. The distribution law of SiC particles under the condition of ultrasonic stirring, mechanical stirring and hybrid stirring, and the influence of different preparation processes on the tensile strength were studied. The results show that the mechanical stirring makes SiC particles in SiCp/7085 aluminum metal matrix distribute more evenly, however, the number of pores increases.The ultrasonic stirring can effectively reduce the number of pores in the composite. When adopting the hybrid stirring process of mechanical stirring and ultrasonic stirring, SiC particles distribute evenly in the prepared SiCp/7085 composite and there is a significant reduction of pores in SiCp/7085 composite, meanwhile, the tensile strength of the composite reinforced with SiC（80μm） and SiC（30μm） compared with 7085 alloy increases by 57% and 67%, respectively.
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