TY - JFULL AU - M. Aruna and V. Dhanalaksmi PY - 2012/2/ TI - Design Optimization of Cutting Parameters when Turning Inconel 718 with Cermet Inserts T2 - International Journal of Mechanical and Mechatronics Engineering SP - 277 EP - 281 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/9109 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 61, 2012 N2 - Inconel 718, a nickel based super-alloy is an extensively used alloy, accounting for about 50% by weight of materials used in an aerospace engine, mainly in the gas turbine compartment. This is owing to their outstanding strength and oxidation resistance at elevated temperatures in excess of 5500 C. Machining is a requisite operation in the aircraft industries for the manufacture of the components especially for gas turbines. This paper is concerned with optimization of the surface roughness when turning Inconel 718 with cermet inserts. Optimization of turning operation is very useful to reduce cost and time for machining. The approach is based on Response Surface Method (RSM). In this work, second-order quadratic models are developed for surface roughness, considering the cutting speed, feed rate and depth of cut as the cutting parameters, using central composite design. The developed models are used to determine the optimum machining parameters. These optimized machining parameters are validated experimentally, and it is observed that the response values are in reasonable agreement with the predicted values. ER -