In the current study, the synthesis and characterization of a metal matrix
composite material encompassing MoS2
, B4C and graphite as reinforcement have been
carried out. Hybrid composites are prepared by using stir-casting techniques with
various weight percentages (1%, 2%, and 3%) of each reinforcement (Molybdenum
Disulfide, Boron carbide and Graphite). After fabrication, the ingots were subjected to
various tests to study their mechanical behaviour and microstructure. Tensile test,
hardness test, and impact test were conducted by ASTM standard to find the effect of
reinforcement on aluminium metal matrix composite (Al 7075- MoS2
, B4C, and
graphite). The microstructural study (scanning electron microscope) was conducted to
assess the distribution of reinforcement on the composite. The spread and interaction of
constituent materials play a key role in their properties. The results show that the
addition of reinforcements up to 3% to matrix metal Al 7075, the hardness, tensile, and
impact properties were increased compared to base AL 7075 alloy.
Keywords: Aluminium alloy 7075, Boron Carbide B4C, Dry Sliding wear rate, Graphite, Hardness, Impact, Molybdenum Disulfide MoS2 , Stir casting, SEM, Tensile.