Topic of Research Seminar: Comparative Analysis of Surface Roughness in High and Low Speed Micromilling of Inconel 718 Superalloy with Coated Tools

Abstract: Inconel 718, a nickel-based superalloy extensively recognized for its mechanical strength, thermal resistance and corrosion tolerance, making it a prime candidate for aerospace, energy and biomedical applications. With the ongoing shift toward miniaturized and high-precision components, micromachining techniques such as micromilling have emerged as a crucial technique for fabricating intricate features in such hard-to-machine materials. This research conducts comparative analysis of surface roughness achieved under high-speed and low speed micromilling to assess the machinability of Inconel 718. Experiments were designed using Taguchi L-16 orthogonal array at four levels of input parameters like cutting speed, feed and depth of cut coupled with coated and uncoated tools. Analysis of Variance (ANOVA) was applied to investigate the effect of each parameter on roughness. The findings not only highlight the superiority of high-speed micromilling but also contribute to the optimization of process parameters where surface integrity is critical.

Subject field of Topic: Manufacturing/ Machining

Name of Speaker: Ahmad Waqar Tehami

Professional Rank of Speaker: PhD Student

University Email of Speaker: [email protected]

Affiliation of Speaker: School of Mechanical and Manufacturing Engineering (SMME)

Date and Venue: Friday 07th November 2025 from 1130 hrs to 1200 hrs online.

Online Link: https://bit.ly/47iA0Jh