Chip morphology analysis in Al6061/CNT drilling with carbide and nano coated drills

Abstract

Now a days the area of Metal Matrix Composites (MMCs) is attracting the scientific and intellectual communities due to their broad technological and industrial applications. Further Aluminium based Metal Matrix Composites have gained importance as materials for engineering applications due to their lightness, higher specific strength, wear resistance and enhanced mechanical properties. In this work three different types of Aluminium Metal Matrix Composites (AMMNCs) samples are prepared by reinforcing Carbon Nano Tubes (CNT) percentages of 0.3%, 0.6% and 0.9% with Al6061 base material using ultrasonic stir casting furnace. Drilling experiments are conducted according to Taguchi experimental design with different parametric combinations. The machining responses such as temperature, surface roughness, material removal rate, power, thrust force, torque and diametrical error are measured and recorded for each experimental run. Also the chip morphology is studied for various cutting parameters in drilling operation.