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In recent times, aluminium and its alloys based composites have gained a lot of popularity in all the emerging fields of engineering and technology owing to their superior mechanical properties. Aluminium Metal Matrix Composites (AMMCs) combine the advantages of aluminium alloys and the special properties of ceramic particles like Silicon Carbide. Though these composites are light weight, they have good mechanical properties and the various reinforcements added with the matrix in Hybrid Metal Matrix Composites (HMMCs) improve the properties such as tensile strength, wear resistance and hardness etc... [1, 2]. The stir casting, which is the liquid metallurgy technique used here, is economical, very easy of operation and convenient for mass production [3]. Although researchers have focused on the effect of process parameter on the mechanical properties of composites, not much research has been done using three process parameters like particle size of reinforcement, wt. % of reinforcement, and stirring time simultaneously while preparing the composites [4]. In this study, Taguchi technique, a Design of experiment (DOE) method, was used to improve the overall performances of the cast composite by optimizing the process parameter such as stirring time, stirring speed, increasing the wt% SiC and the wt% of fly ash was kept constant.DOE is a technique for defining and investigating all possible conditions involving multiple factors, parameters and variables in an experiment. But wt. % of reinforcement was the most influential parameter that obtains the highest mechanical characterization of the composite [5].

Parameter Optimization and the Effect of Parameters on Mechanical Properties of Hybrid Composite