Abstract
Super alloys are widely used in many applications such as aerospace, automotive, biomedical, marine, mining and oil industries. In high-speed micro end milling (HSMEM) of super alloys, the proper selection of cutting tool is necessary to achieve good surface quality without burrs. Surface roughness characterisation is crucial on the work materials to achieve the desired production rate in limited time and at low cost. In this research work, surface roughness characterisation was investigated in order to opt for the better possible tool for machining Near Alpha Titanium Alloy Grade-12 under feasible conditions. The influence of machining parameters i.e. cutting speed, feed and depth of cut on surface roughness was investigated in the present work. Experiments were conducted under dry cutting conditions using Uncoated, PVD Coated TiAlN & AlTiN tungsten carbide tools. It was observed that machining with uncoated tungsten carbide tools generates less surface roughness on near alpha titanium alloy.
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