Experimental Investigation and Evaluation of Properties for Hybrid Metal Matrix Composites Reinforced with Fe2o3 And Graphite Powder

Abstract

Aluminum metal matrix composites with numerous reinforcements (hybrid MMCs) having enormous potentials of satisfying novel demands of progressive engineering applications due to their enhanced mechanical properties such as Brinell hardness, tensile strength and compressive strength. Bottom down Stir casting method is followed to produce aluminum as base metal and their reinforced with various reinforcement level 2,4and 6 % of Fe2o3 and graphite powder use in same fraction. The microstructure distinctive of composites were observed by focusing of inverted metallurgical microscope. In particular emphasis the results were compared in those three different reinforced fractions. Finally, the comparative observation of their composites and their performance improvement and its mechanical properties such as strength and hardness. It is found that there is a good improvement in ultimate tensile strength, hardness and compressive strength up to reinforcement fraction of Fe2o3 and graphite 4% in an aluminum metal matrix composite.
Keywords-- Aluminium-6061, Fe2O3, Graphite, Stir casting Process, Physical and Mechanical properties