Assessment of machinability of super alloy inconel 718 using aluminium oxide and mixed oxide ceramic cutting tools

Abstract

The current study, attempts to be have made for the assessment of influence of cutting speeds with constant feed of 0.19mm/rev with 0.3mm depth of cut on tool wear during dry turning of Inconel 718. Comparative study was conducted using Al -oxide and Mixed Oxide cutting inserts (commercially available with similar geometry) for experimental trials. This exploratory investigation focuses on the tool life deterioration of various ceramic materials associated with the machinability of Inconel 718 under selected process parameters. Also, significant parameters were identified that effect and control flank wear. The flank wear was assessed on the inserts for every trail through measurements using advanced Optical Microscope. Further observations were made on Hitachi Scanning Electron Microscope (SEM) to understand the wear pattern encountered by selected tool materials.