OBRABOTKAMETALLOV Vol. 27 No. 4 2025 42 TECHNOLOGY Research and analysis of electrical discharge machining in the manufacture of products from heat-resistant alloys: a literature review Evgeniy Shlykov a, *, Timur Ablyaz b, Vladimir Blokhin c, Karim Muratov d, Ilya Osinnikov e Perm National Research Polytechnic University, 29 Komsomolsky prospekt, Perm, 614990, Russian Federation a https://orcid.org/0000-0001-8076-0509, Kruspert@mail.ru; b http://orcid.org/0000-0001-6607-4692, lowrider11-13-11@mail.ru; c https://orcid.org/0009-0009-2693-6580, warkk98@mail.ru; d http://orcid.org/0000-0001-7612-8025, Karimur_80@mail.ru; e https://orcid.org/0009-0006-4478-3803, ilyuhaosinnikov@bk.ru Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2025 vol. 27 no. 4 pp. 16–47 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2025-27.4-16-47 ART I CLE I NFO Article history: Received: 11 June 2025 Revised: 04 July 2025 Accepted: 09 September 2025 Available online: 15 December 2025 Keywords: Electrical discharge machining Heat-resistant alloys Experimental studies Working fl uid Surface roughness Accuracy Microcracks Surface layer ABSTRACT Introduction. In modern mechanical engineering, there is a growing trend toward the development and implementation of novel heat-resistant alloys with enhanced physical and mechanical properties. Electrical discharge machining (EDM) is a promising method for manufacturing products from these new-generation heat-resistant alloys. This paper presents an analysis of current research in the fi eld of EDM of heat-resistant alloys. The primary focus is on analyzing output qualitative and quantitative indicators in relation to input parameters – machining mode and conditions. The key factors infl uencing the effi ciency of EDM are considered, including machining parameters and the composition of the working fl uid and electrode material. This analysis of current research is intended for specialists in the fi eld of heat-resistant alloy machining, developers of EDM technologies, and researchers working to improve manufacturing methods for aircraft engine components. The purpose of this work is to conduct a literature review of existing research on modern methods for ensuring and improving the effi ciency and quality of electrical discharge machining (EDM) of heat-resistant materials. The methods of investigation involved a theoretical analysis of current research on electrical discharge machining of heat-resistant alloys. Results and discussion. A literature analysis was conducted, and it revealed that current strength and pulse duration are the main technological parameters determining the quality of the processed surface and the material removal rate. The eff ectiveness of using modifi ed working fl uids (with graphene and carbon nanotubes) during heat-resistant material processing to improve surface quality was confi rmed. It is of particular interest to conduct experimental studies on the infl uence of adding various material components to the working fl uid to improve surface quality indicators after complex pulse electrical discharge machining (CPEDM) and to assess the impact of these alloying materials on the surface layer of heat-resistant materials. For citation: Shlykov E.S., Ablyaz T.R., Blokhin V.B., Muratov K.R., Osinnikov I.V. Research and analysis of electrical discharge machining in the manufacture of products from heat-resistant alloys: a literature review. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science, 2025, vol. 27, no. 4, pp. 16–47. DOI: 10.17212/1994-6309-2025-27.4-16-47. (In Russian). ______ * Corresponding author Shlykov Evgeniy S., Ph.D. (Engineering), Associate Professor Perm National Research Polytechnic University, 29 Komsomolsky prospekt, 614990, Perm, Russian Federation Tel.: +7 961 759-88-49, e-mail: Kruspert@mail.ru References 1. Wang X., Wang G., Wang W., Liu X., Liu Y., Jin Y., Zhang Y. Enhancing corrosion resistance of nickel-based alloys: A review of alloying, surface treatments, and environmental eff ects. Journal of Alloys and Compounds, 2025, vol. 1032, pp. 181–195. DOI: 10.1016/j.jallcom.2025.181014. 2. Li H., Liu H., Li J., Yao H. High-temperature corrosion resistance of weld overlay In625 coating in aggressive environments of waste incinerators. Corrosion Science, 2025, vol. 249. DOI: 10.1016/j.corsci.2025.112865. 3. Madhusudan S., Epifano E., Favergeon J., Sanviemvongsak T., Marechal D., Monceau D. High temperature intergranular oxidation of nickel based superalloy Inconel 718. High Temperature Corrosion of Materials, 2024, vol. 101, pp. 873–884. DOI: 10.1007/s11085-024-10260-z.
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