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<p>Inconel X-750, an emerging superalloy known for its exceptional properties, finds extensive applications in gas turbine engines and rocket engines. This research article investigates the performance characteristics of the Electrical Discharge Machining (EDM) of Inconel X-750 in hydrocarbon oil, focusing on the analysis of various control parameters. The study was performed to examine the effects of control parameters such as polarity, peak current (<i>I</i><sub>p</sub>), pulse-on time (<i>T</i><sub>on</sub>), pulse-off time (<i>T</i><sub>off</sub>), jump-up distance (JU), jump-down time (JD), jump speed (JS), and duty cycle (<i>τ</i>) on various responses. These responses include material removal rate (MRR), surface roughness (SR), tool wear rate (TWR), surface topography, surface morphology, recast layer, and elemental composition. The resulting trends and responses have been comprehensively assessed to understand the underlying physics of the EDM process for Inconel X-750 under various control parameters. The experimental findings suggested minimal deposition or very low TWR across all experimental trials. Furthermore, the highest MRR at 15 A showed an increase of ~ 5184% over the lowest MRR at 3 A, while the corresponding SR exhibited an increase of ~ 291% compared to that at the lowest MRR.</p>

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Performance and Surface Integrity in the Electrical Discharge Machining of Nickel-Based Superalloys: Analysis and Assessment

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Sameer Kumar Anand,
  • Dupadu Chakradhar

摘要

Inconel X-750, an emerging superalloy known for its exceptional properties, finds extensive applications in gas turbine engines and rocket engines. This research article investigates the performance characteristics of the Electrical Discharge Machining (EDM) of Inconel X-750 in hydrocarbon oil, focusing on the analysis of various control parameters. The study was performed to examine the effects of control parameters such as polarity, peak current (Ip), pulse-on time (Ton), pulse-off time (Toff), jump-up distance (JU), jump-down time (JD), jump speed (JS), and duty cycle (τ) on various responses. These responses include material removal rate (MRR), surface roughness (SR), tool wear rate (TWR), surface topography, surface morphology, recast layer, and elemental composition. The resulting trends and responses have been comprehensively assessed to understand the underlying physics of the EDM process for Inconel X-750 under various control parameters. The experimental findings suggested minimal deposition or very low TWR across all experimental trials. Furthermore, the highest MRR at 15 A showed an increase of ~ 5184% over the lowest MRR at 3 A, while the corresponding SR exhibited an increase of ~ 291% compared to that at the lowest MRR.