Title: Investigations on performance characteristics of hybrid peripheral surface grinding on Al/Al₂O₃p/B₄Cp hybrid metal matrix composite

Authors: Ram Singar Yadav; Vinod Yadava

Addresses: Department of Mechanical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat-395007, India ' Department of Mechanical Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh-211004, India

Abstract: In the present work, an attempt was made to investigate performance characteristics of electrical discharge diamond peripheral surface grinding (EDDPSG) on a challenging hybrid metal matrix composite namely Al/Al₂O₃p/B₄Cp using self-developed experimental setup. EDDPSG is an innovative configuration of electrical discharge diamond grinding process applicable for machining flat surfaces of poor machinability materials. Performance parameters are material removal rate (MRR) and surface roughness (R_a), experimentally studied under influence of the process parameters (gap current, on-time, off-time, grit-number, wheel-speed, and table-speed). Promising potential capability was observed for removing non-conductive ceramic-reinforcements together with soft and ductile matrix material producing higher MRR and surface-finish. Gap current is the most significant process parameter affecting MRR and R_a by 361% and 61% respectively. Very thin re-solidified layers and small streaks on machined surface were observed using scanning electron microscopy which, demonstrate potential applicability and suitability of the process for machining of such complex hybrid composites.

Keywords: hybrid metal matrix composite; HMMC; electrical discharge diamond grinding; EDDG; MRR; R_a; grinding.

DOI: 10.1504/IJMPT.2022.120659

International Journal of Materials and Product Technology, 2022 Vol.64 No.2, pp.175 - 197

Accepted: 04 Aug 2021
Published online: 31 Jan 2022 *

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