Investigation on surface roughness of aluminium (Al7050/TiC/BN) hybrid metal matrix

Aluminium metal matrix composites with hybrid reinforcement were known for its superior performance and has its application as light weight material in all industries viz., aerospace, automobile, medical military and construction sector. In order to expand its usages and advantages further, investigation was carried on Surface Roughness of Al7050 metal matrix reinforced with Titanium Carbide (4, 8, 12% wt) and Boron Nitride (2, 3, 4% wt) fabricated through compo-casting process. Milling operation was performed on Al7050 (TiC/BN) composite as work piece and the effect of speed (500 – 1500 rpm) and feed rate (100 – 300 mm/min) on surface roughness was measured using potable surface roughness tester. The ANOVA results reveal that TiC has high substantial influence on surface roughness followed by speed of cut and feed rate while BN has less significance. The relationship between process parameters and surface roughness is established through regression equation developed using Minitab 13.