A Characterization of Functionally Graded Material for Optimum Utilization in Industry

Abstract

quotFunctionally Graded Material (FGM) is a new type of compound material. It belongs to an advanced material with varying properties. Functionally graded materials are the composite materials in which the content of reinforcement is gradually varied in some direction to achieve a gradient in properties. Functionally graded tools and dies will enable better thermal management, possess better wear resistance, reduce scrap, and improve process productivity. newlineThe selection of cutting tools stands as a marvel of ultimate significance for machinists and manufacturing personnel which hamper the quality of surface, machining time, and energy requirement. Cermet insert is a key preference for particular dry machining finishing operations in many industries. It possesses characteristics like high-temperature hardness, wear resistance, plastic deformation resistance, high chemical stability, and welding resistance. On the other hand, it is a moderate value of fracture resistance, thermal crack susceptibility, and shock resistance. The uncoated cermet insert has the capacity to the machining of the workpiece having hardness more than 35 HRC. newlineThe life of a cutting tool is one of the major parameters which affects the cost and quality of machining. Hence manufacturing industries putting lots of effort and resources to increase tool life and productivity. This research focuses on increasing the life of cutting tool insert by suggesting new coating material for turning operation of harden metals. An experimentation analysis is carried out on uncoated, conventional coated (AlTiN) and newly suggested coating (TiSiN) cermet insert. Experiments were performed by selecting 90, 183, and 245 m/min cutting speed, 0.2 mm/rev feed, and 0.25 mm depth of cut. The result shows all three inserts give good performance at 90 m/min cutting speed. Tool life of AlTiN coated insert shows 19.36 min and TiSiN coated insert shows 22.51 min at 183 m/min cutting speed. At cutting speed 245 m/min all three types of cutting insert breaks even after 1 min o