Evaluation of hardness and analysis of parameters on reinforced Al-MMC

•The correct proportions, selection and properties of reinforcement are playing an essential role on metal composite.•The substance properties may be changed with varying the different factors such as weight percentage, size of the particles and grit size.•The present investigation describes the evaluation of hardness through parametric changes of reinforcements.•The evaluation of hardness Of Aluminium 7068 reinforced with Tantalum carbide studied through Taguchi method.•The parametric changes and their effect has been studied through Taguchi method.