Application of particulate reinforced composite is being emphasized day by day due to its modified strength, high hardness, less weight, and ductility. This paper deals with the behaviour of physical, mechanical and tribological properties of aluminium matrix composite reinforced by micro-sized silicon carbide particles (in a various quantity such as 0, 3, 6 and 9 wt.%) prepared by stir casting fabrication process. With the increase in weight percentage of SiC reinforcement, the density of composite improves from 2.76 gm/cc to 2.83 gm/cc, and the porosity of composite reduces from 1.78% to 0.56%. UTS and Hardness of SiC particle reinforced aluminium matrix composites developed from 140 MPa to 205 MPa and 66 HV to 84 HV respectively. Microstructure reveals that strong bonding develops between matrix and reinforcement in terms of strength and hardness in all the formed composites compared to its matrix material. Comparatively less wear is observed with enhancing SiC content conducted by the pin on disc dry sliding wear test for all the formed composites.

中文翻译：

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搅拌铸造Al7075/SiC铝基复合材料的组织、力学和磨损行为

颗粒增强复合材料由于其改良的强度、高硬度、轻质和延展性，其应用日益受到重视。本文研究了通过搅拌铸造工艺制备的微尺寸碳化硅颗粒（不同数量，如 0、3、6 和 9 wt.%）增强的铝基复合材料的物理、机械和摩擦学性能。随着SiC增强体重量百分比的增加，复合材料的密度从2.76 gm/cc提高到2.83 gm/cc，复合材料的孔隙率从1.78%降低到0.56%。碳化硅颗粒增强铝基复合材料的 UTS 和硬度分别从 140 MPa 发展到 205 MPa 和 66 HV 到 84 HV。微观结构表明，与基体材料相比，所有成型复合材料的强度和硬度在基体和增强材料之间形成了强结合。对于所有形成的复合材料，通过销在盘上干滑动磨损试验进行的 SiC 含量增加，观察到磨损相对较少。