Title: Surface modification in PMEDM process due to complex material transfer phenomena: a case study

Authors: Kuldeep Ojha; Rajiv Kumar Garg

Addresses: Department of Mechanical and Manufacturing Engineering, The University of the West Indies, St. Augustine, Trinidad and Tobago ' Department of Industrial and Production Engineering, NIT Jalandhar, Jalandhar (Punjab) 144011, India

Abstract: The presented research paper is a study of surface morphology and change in composition of EN-8 steel work surfaces. Powder mixed electrical discharge machining (PMEDM) process was applied to investigate the work surface. Energy dispersive X-ray (EDX) analysis was done for selected workpiece samples to confirm presence of additional elements in machined surfaces. Composition testing was done on spectrometer with the objective to confirm the material transfer on machined surface. Quantitative analysis has also been done to investigate changes in machined surface constituents. Scanning electron microscopy of selected samples has also been carried out to analyse the microstructure. The paper reports the resulted changes in surface structure of machined object due to complex material transfer phenomena between workpiece and electrode.

Keywords: electrical discharge machining; EDM; energy dispersive X-ray EDX; Powder mixed electrical discharge machining; PMEDM; machining; SEM.

DOI: 10.1504/IJMATEI.2022.126517

International Journal of Materials Engineering Innovation, 2022 Vol.13 No.4, pp.273 - 290

Received: 27 Sep 2021
Accepted: 18 Dec 2021
Published online: 27 Oct 2022 *

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