FABRICATION AND MECHANICAL CHARACTERIZATION OF HYBRID AA6063/RED MUD/TI02 COMPOSITE

Abstract

Composite materials are produced by adding two or more materials together. The materials that are included in composite have unique physical or chemical properties individually but when they are mixed together, the produced material has different properties unlike to individual elements.Aluminum Metal Matrix Composites (AMMC’s) are most popular composite material used in wide sectors such as automobiles, defense, aerospace etc. due to its properties like hardness, low density, non-magnetic, low maintenance and many more. AMMC’s are fabricated using various processes such as stir casting, diffusion bonding and Power Metallurgy (PM) process. Amongst all, stir casting is most economical and simpleprocess. Red mud is the waste by-product during the production of alumina from bauxite by the Bayer’s process. It is insoluble waste produced due to digestion of bauxite at high temperature and pressure. Utilization and disposal of red mud is a major environmental concern. To overcome that red mud is used as reinforcement in MMC (Metal Matrix Composite). Using red mud as reinforcement with Aluminum matrix improves the hardness of the Matrix Composite and shows the Composite characteristics.