The aim of the current work is to optimize the drilling constraints simultaneously during drilling of an Al6063/TiC composite based on grey relational analysis. Drilling trials were performed on Al-6063 reinforced with 15 wt% titanium carbide (TiC) of size 50 μm. HSS twist drills with diameter of 10 mm under lubricated condition were utilized for performing drilling tests. Drilling parameters explicitly helix angle, spindle speed, feed rate and responses such as surface roughness, cutting force and temperature are considered in the study. Grey relational grades were calculated to find the optimum levels of parameters, and moreover major involvement of constraints was dogged by ANOVA. The drilled composite specimen surface was analyzed under scanning electron microscopy (SEM). SEM metaphors of the drilled composite face specified the charisma of grooves, micro-cracks and dents.

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