Fabrication and machinability study of al7075 sic gr hybrid metal matrix composite

Abstract

The demand for Al7075 alloy has been increasing constantly over the newlineyears due to its low density, high strength to weight ratio, high yield strength, newlinehigh tensile strength and high elongation during the time of failure. Due to its newlinefavourable properties, it finds vast number of applications in the fields of newlineaerospace, automobile, electronics, mechanical and other marine-based newlineindustries. Al7075 alloy is either directly used or used in the form of metal newlinematrix composites in the above-mentioned fields. Therefore, Al7075 alloy newlinewhich gained wide attention in recent times is selected as the base material for newlinethis research work. A wide and in-depth literature survey has been carried newlineconsidering the demand for machining of aluminium based hybrid MMCs, the newlinevariety of which has been growing continuously. newlineFrom the analysis of literature, it is obvious that most of the newlineresearchers have focused only on the fabrication of SiC reinforced MMCs, for newlinecharacterization and testing. This research work mainly focuses on hybrid newlineMMC with combined reinforcement of SiC and graphite particles to carry out newlinecharacterization as well as machinability studies by adding the combination of newlineSiC and Gr (wt%) reinforcements in different ratios. newlineTo conduct the investigation, aluminium based hybrid MMCs, newlineincorporated with different wt% of SiC and Gr were fabricated. The main newlineobjective is to find the consequence of turning factors like feed rate, cutting newlinespeed and depth of cut on surface roughness, tool flank wear, cutting force newlineand material removal rate in the turning of Al based hybrid MMCs using newlineSNMG120408 tungsten carbide inserts. newline