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

Abstract

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.

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

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