| Abstrakt: |
Metal matrix composites (MMCs) are widely used in different industrial applications because of their superior properties, like high specific strength, high impact strength, and high fracture toughness when compared to traditional materials. Among all aluminum alloys, the Al 7075 series was widely used in transportation applications, particularly aerospace, aviation, Marin, and vehicle, because of its high strength to low weight ratio. Even though the Al 7075 series alloys have better mechanical and thermal characteristics as well as high wear resistance, they still need to be improved to be used in engineering applications. The mechanical properties of Al-7075 metal matrix composite (AMMCs) reinforced with (3,6 and 9) of B4C and/or SiC incorporated in the stir casting method are investigated in this study. The mechanical properties of AMMCs, such as Vickers hardness(VHN), ultimate tensile strength(UTS), ultimate compression strength(UCS), flexural strength(FS), and elongation e%; were explored after reviewing the literature on the mechanical behavior of AMMCs. The materials were characterized using the XRD, particle size analyzer, SEM, and optical microscope. Mechanical properties results revealed that all reinforcing materials have an influential impact on these parameters. The reinforcing material (4.5 % B4C+4.5 % SiC) provided better mechanical properties. Mechanical properties have improved by 54.95 percent in VHN, 32.46 percent in UTS, 31.1 percent in YS, 39.4% in FS, and 34.42 percent in UCS when compared to the base alloy. Optimization by gray relational analysis based on the Taguchi method used to determine the best combination of AMMC. [ABSTRACT FROM AUTHOR] |
