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Mechanical and Dry Sliding Wear Behavior OFAL 6063/Al2o3/Graphite Hybrid Composites

S.Jagatheesh Kumar, G.Santhosh, D.Nirmalkumar, A.Saravanakumar, Dr.P.Sasikumar, Dr.S.Sivasankaran

This paper presents the wear behavior of Al6063 discontinuously reinforced with graphite and Aluminium oxide composite. Graphite is chosen because it has self-lubricating property which can reduce friction and also reduce wear. Al 6063-6% Al2O3, Al 6063-6% Al2O3-1% Gr composites were produced by stir casting method and then the samples strength and wear behavior were carried out by hardness test and pin-on-disc wear test apparatus. The obtained result showed that Al 6063- 6%Al2O3-1%Gr hybrid composite exhibited more wear resistance when compared to Al 6063-6% Al2O3 monoreinforced composite. It was expected that the addition of 1 wt.% Gr particulates might pin downed the wear. In order to judge the densification behavior, the samples were multi-axially forged and the strength of the samples was compared. The results showed that the multi-axially forged samples exhibited more strength than as-casted samples due to presence of pores in as-casted condition.