Abrasive wear characteristics of composite material (AA 7075 SiC)‎ synthesized by stir casting

Abstract EN

Aluminum metal matrix composites (ALMMCs) was prepared by using stir casting technique for AA 7075 aluminum alloy as a matrix reinforced with sic particles at various percentages (3, 6, 9 and 12 wt.

% ) and 75μm in grain size.

the prepared composite material can be used for many applications such as aerospace, automobiles and many industrial sectors.

abrasive wear test was carried out by two stages: the first stage was done by changing the emery papers at various grit sizes 180, 320, 500, and 1000μm with constant applied load 15n.

while the second stage was carried out by changing the applied loads 5, 10, 15, 20 and 25n with constant emery paper at 320 μm grit size.

microstructure examination, hardness test and roughness test were performed before and after abrasive wear test.

the results of this investigation showed the increasing in weight percentage of the reinforcement material leads to increase the hardness, roughness and improving the abrasive wear resistance.