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1 PG Scholar Department of Engineerng Design , KRCE 2 ,3 Assistant Professor Department of mechanical engineering , KRCE Abstract Aluminium metal matrix composites hve gained importance in various industries because of their good mechanical properties such as wear resistance, low density, high strength and good structural rigidity. Aluminium metal matrix composites are preferred in the field of aerospace, military, automotive, marine and in many other domestic applications. In this study, it is intended to develop and study the hardness behavior of AL6061 / graphite and molybdenum disulfide reinforced hybrid aluminium metal matrix composites. The composites are prepared by using liquid metallurgy route (stir casting technique), liquid state has some important advantages such as better matrix particle bonding, easier control of matrix structure, simplicity, low cost of processing, nearer to net shape and wide selection of material. AL6061 alloy is taken as the base matrix to which graphite and molybdenum particulates are used as reinforcements.0.5, 1, 2, 3, and 4% of graphite is added to the base matrix, and molybdenum disulfide is varied from 0.5,1,2,3 and 4 wt% into the base matrix .for each composite, reinforcement particles are pre-heated to a temperature 240 degree centigrade. The hardness properties of prepared composites were examined using Rockwell hardness tester.the mechanical behavior of composite material were increased .also this composite material is having a good hardness behavior. Keywords—Aluminium 6061,graphite and molybdenum disulfide,Stir casting process,hardness test

EXPERIMENTAL INVESTIGATION OF HARDNESS OF AL6061 WITH GRAPHINE AND MOLYBDENUM METAL MATRIX COMPOSITE