Machinability studies on nickel based cast super alloy inconel 713c

Abstract

Nickel based cast super alloys are extensively used in aeronautical industries, engineering field, for turbine and pressure cutting edges in the hot sections of jet engines, guide vanes for industrial turbines, vane material and first stage blading in the jet aircraft, turbocharger shaft wheels etc. Inconel 713C alloys are one of the most complicated materials to be machined and were administered to difficult to cut materials due to their unique properties such as work hardening characters like precipitation hardenable and increased toughness of the alloys. Hence machining of inconel alloys are highly tricky. In the current work inconel 713C nickel alloy is used for machinability study. The machining performance of inconel 713C alloys are carried out by the utilization of tungsten carbide cobalt (WC-Co) tools. The performance analysis of machining was carried out by dry machining of inconel 713C alloy with untreated WC-Co tools and cryogenically treated with oil quenched WC-Co tools. The current advancement in the investigation of machining reveals that the vital efforts are needed to understand the impact of cryogenic treatment and oil quenching on machining operations. The main target for improving the process and the performance of the product is the characteristics of cutting force and surface roughness. The current paper presents the investigational evidence on cutting force, surface roughness, cutting temperature, chip morphology and tool wear. Design of experiment have been utilized to investigate the impact of significant process parameters such as cutting speed, feed rate and depth of cut on response variables such as cutting force and surface roughness of the work material inconel 713C nickel based cast super alloy. A statistical prognostic design has been established with respect to process parameters. The impact of these process parameters on response variables have been examined by Taguchi Grey Relational Analysis (TGRA) newline