Experimental Investigations and Multiobjective Optimization in Machining of INCONEL X750 Superalloy Using Cryogenically Treated PVD-Coated Tool

The machining of Inconel X750 is challenging due to its high cutting forces and limited heat conductivity. This study investigated the influence of cutting parameters, namely cutting speed, feed, and depth of cut, on material removal rate (MRR), tool wear (TW), and surface roughness (Ra). A cryogenically treated PVD-coated tool was utilized to machine Inconel X750. The optimal machining settings were found to be 60 m/min cutting speed (V), 0.25 mm feed rate (f), and 1 mm depth of cut (DOC). Taguchi L27 array with three factors and three levels was employed in the study. The study demonstrated how cutting parameters can be optimized to enhance machining performance in Inconel X750.