High Speed Machining of Inconel 718: Tool Wear and Surface Roughness Analysis

Inconel 718 is a Nickel based Heat Resistance Super Alloy (HRSA) widely used in many aerospace applications. It possesses good properties like corrosion resistance, high strength and exceptional weldability. It is considered as one of the most difficult to cut alloy. Recently many researcher have focus in employing many machining strategies to improve machinability of Inconel 718. This paper presents High Speed Machining (HSM) of Inconel 718. Turning trials are conducted at various speed ranging from low to high (60 m/min, 90 m/min, 190 m/min, 255 m/min). Tool wear and surface roughness, which are two major aspects of machinability, have been discussed in this investigation.