A review on conventional and thermal assisted machining of titanium based alloy

Abstract Advanced engineered and difficult-to-cut materials are in stringent demand for industries, due to their inherent properties and applications in aircraft structural and engine parts. The machinability attributes, for example, higher cutting power, more cutting temperature, reduced surface integrity and lesser tool life related to having numerous difficulties to the researchers, and these challenges arise when machining process is being done on the new and tough materials. Hence conventional machining approaches of super alloys limit those applications due to processing difficulties in attaining high reliability and surface integrity, associated with high machining cost. In recent-past, many research efforts focused on improving the machinability viz-Thermal assisted Machining (TAM). This process uses external heat sources that raise the workpiece temperature and make softer the work material nearby leading of the cutting tool. Increased temperature by the side of shear zone decreases the workpiece yield strength and work hardening, causing in plastic deformation of materials that could help for ease of machining, also affects the material removal rate (MRR). TAM is associated with higher material removal rate, higher surface finish, and also better control of time on machining. It helps in reducing cutting forces thereby increasing the surface finish. Titanium alloys generally used in bio-implants requires high precision in dimensions, TAM is the best machining practice for Titanium and its alloys. The present work survey, and shorten the potential utilization of Titanium based alloys and control parameters, current advancement, advantages and difficulties. Many parameters affect the machining characteristics (surface integrity, material removal rate, tool life, residual stresses etc), and tool geometry and corresponding research method, tool wear, cutting speed, etc., Tool materials, different heat methods are the primary ones worth to investigate.