STUDIES ON INCONEL 925 MACHINABILITY USING TiAlN-COATED TUNGSTEN CARBIDE INSERTS BLENDED WITH <i>PONGAMIA PINNATA</i> OIL LUBRICATION

The primary goals of this paper is to study the effects of a coating of TiAlN on tungsten carbide tool inserts using a high-velocity oxy-fuel thermal spraying technique; then, to machinize Inconel 925 alloys with these tools while incorporating Pongamia pinnata oil as a lubricant in a minimum quantity lubrication condition. We use this to create a core composite design model and find the real-world connections between the key machining process variables and the results. The response surface methods are utilized to optimize the model, rank the parameters, and do sensitivity analysis. The critical aspect in this research is to assess the impact of changing critical machining process parameters on the quality of the machined job. This research focused on use of scanning electron microscopy, X-ray diffraction, electron backscattering diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy to characterize the machined tool inserts and Inconel 925 materials.