Abstract:

Aluminum metal matrix composites are materials used in many branches such as aircraft, space, automotive and defense industries. Researchers have investigated metal matrix composites by adding different reinforcements in micro size in many studies. In this study, nanocomposite and hybrid nanocomposite samples were produced by powder metallurgy method by adding nano-sized B4C and SiC reinforcements separately and together to aluminum metal matrix composites. The effect of B4C and SiC reinforcement type on the mechanical, physical and corrosion behavior of nanocomposites and hybrid nanocomposites was investigated. As a result of mechanical tests, hardness and bending strength values increased regardless of reinforcement type. The highest hardness (209.9 HB) and bending strength (799.2 MPa) values showed 5% by weight B4C reinforced nanocomposite sample. The lowest porosity value belongs to the unreinforced Al 2024 alloy sample. According to the corrosion test results, the sample with the lowest current density was Al 2024-B4C (0.53 A/cm2x10-6) nanocomposite, and it was approximately 87 times lower than the current density of the unreinforced Al 2024 sample (46.12 A/cm2x10-6).

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