From experimental investigations, the
gradual growth of flank wear for multilayer coated insert indicates steady machining without any
premature tool failure by chipping or fracturing. Abrasion is found to be the dominant wear
mechanisms in hard turning. Tool life of multilayer coated carbide inserts has been found to be 31
minute under parametric conditions
The results show that the feed rate was the most impact factor controlling the cutting force and surface roughness produced.