A Study on the Machinability Characteristics of Superalloys Inconel-718 during High-Speed Milling

International Journal of Mechanical Engineering

© 2021 by SSRG - IJME Journal

Volume 8 Issue 2

Year of Publication : 2021

Authors : Nandkumar N. Bhopale, Datttatraya. S. Pimpalgaonkar

10.14445/23488360/IJME-V8I2P101

How to Cite?

Nandkumar N. Bhopale, Datttatraya. S. Pimpalgaonkar, "A Study on the Machinability Characteristics of Superalloys Inconel-718 during High-Speed Milling," SSRG International Journal of Mechanical Engineering, vol. 8,  no. 2, pp. 1-7, 2021. Crossref, https://doi.org/10.14445/23488360/IJME-V8I2P101

Abstract:

The greater challenge to manufacturing engineers is to the machining of complex shapes on Nickel-based superalloy Inconel 718 due to its physical and mechanical properties, i.e., high resistance, toughness, hardness, strength to weight ratio, and chemical property react with tool materials, creep resistance and low thermal conductivity. The Nickel-based superalloys are mainly used for turbine parts as well as high-temperature elements, although these whole properties are necessary to design requirements. The ball end milling machining process is generally used for machining complex shapes three-dimensional sculptured surfaces with definite curvature, and It's a greater challenge due to high temperature and stresses generated during the machining of Inconel 718. This paper presents a detailed experimental investigation of the effect of deflection and machining parameters on the quality of surface integrity in ball-end milling of cantilever-shaped thin plates of Inconel 718. A distinct variation is observed in the measured values of deflection of the workpiece, surface roughness, surface damage, and microhardness in different regions, i.e., fixed end, mid part, and the free end of machined surface and subsurface.

Keywords:

Superalloys, Milling, Deflection, Surface Integrity

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