Role of Si on machined surfaces of Al- based automotive alloys under varying machining parameters

Al-based automotive alloys with different level of Si content has been conducted on the characterization of machined surfaces in terms of roughness, temperature, chips formation as well as microstructue evaluation under different machining conditions. For this experiment a shaper machine with HSS single point V-shaped cutting tool is used at different cutting speed and depth of cut. The experimental results show that the surface roughness of the alloys decresess with cutting speed and depth of cut but it is more prominent on cutting speed. It is because of high cutting speed is more associated with the higher cutting temperatur and softening the work material leading to better surface finish. Higher Si added alloys shows the better surface finish due to…