Parameter Optimization for Electrical Discharge Machining of Stir Casted AA6063/Nano-SiC with Graphite Hybrid Composite Materials by Using Response Surface Methodology

Study of machining characteristics is an important phenomenon of any material; the confirmation of good surface finish can justify the materials application and its usage conditions. The ultimate aim of the automobile industry is providing good mileage with highest safety. In this virtue, the material selected by light weight is very strong. This can be achieved by using the aluminum alloys materials and machined by Electrical Discharge Machines (EDM). In this research work the aluminum alloy 6063 is used as base material and 9 weight percentage of nano-SiC (Silicon carbide) powder is used as a reinforcement with 3 weight percentage of graphite (Gr) is used for the improvement of the aluminum hybrid composite material which is fabricated by using stir casting method. The mechanical properties and microstructures were studied; the machinability characteristics were studied in the EDM and optimized the process parameters by using Taguchi technique with usage of L9 orthogonal array.