Experimental evaluation shows how discharge energy affects surface roughness and microstructural transformations in EDM, indicating profound impacts on material integrity.
This study investigates the physical and microstructural properties of EDM-machined steel under varying electrical discharge machining (EDM) conditions. An experimental approach is adopted to evaluate the influence of pulse time (Ton), rest time (Toff), and discharge current (I) on material removal rate (MRR) and surface roughness (Ra). The effect of discharge energy on crater formation, debris evolution, and microstructural transformations is analyzed. Surface integrity is assessed through microscopic roughness analysis, crater morphology measurements, and X-ray diffraction (XRD) to reveal phase transformations induced by electrothermal effects.
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Messaoudi et al. (2025) studied this question.
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