Automatic Welding, 2025, №05

2025 №05 (09)

DOI of Article 10.37434/as2025.05.01

2025 №05 (02)

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"Avtomatychne Zvaryuvannya" (Automatic Welding), #5, 2024, pp. 5-15

Investigations of technological processes of treatment of metal alloys and welded joints by electromagnetic field (Review)

L.M. Lobanov¹, L.I. Nyrkova¹, M.O. Pashchyn¹, O.L. Mikhodui¹, O.M. Tymoshenko¹, N.L. Todorovych¹, O.M. Syzonenko³, I.P. Kondratenko², V.V. Chopyk², О.М. Karlov²

¹E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: svarka2000@ukr.net
²Institute of Electrodynamics of the NAS of Ukraine. 56 Beresteiskyi Ave., 03057, Kyiv, Ukraine. E-mail: dep7ied@ukr.net
³Institute of Pulse Processes and Technologies of the NAS of Ukraine. 43a Bohoyavlensky Ave., 54018, Mykolaiv, Ukraine. E-mail: dioo@iipt.com.ua

An analysis of promising technologies for improving the mechanical characteristics and stressed states of metal alloys and welded joints based on the use of electromagnetic fields and their derivatives, such as electrodynamic pressure force, eddy currents, and shock waves, is carried out. The process of electrohydro-pulse treatment by a high-energy discharge (EPT HED EHIPD) with application of a hydrocarbon liquid for the production of polydisperse mixtures used for alloying the weld metal of welded joints as part of flux-cored wires, is considered. The positive effect of microadditives of the Ti-TiC system modifier, obtained by EPT HED, on the operational properties of the deposited metal of the 25Kh5FMS tool steel type was determined. It is shown that treatment with a pulsed electromagnetic field (PEMF) improves the residual stressed states of welded joints. New technological schemes for the application of electrodynamic treatment (EDT) of welded joints are considered. The advantages of these two treatments of the weld metal in the welding process in comparison with processing at room temperature are proved. The mechanism of surface hardening of 25KhGNMT steel as a result of its treatment with a pulsed barrier discharge (PBD) was investigated. It is proved that the PBD increases the dislocation density and refines the microstructure, which has a positive effect on the mechanical characteristics of steel. Prospects for its use for non-destructive testing of residual stressed states of welded joints are considered. 46 Ref., 6 Fig.
Keywords: welded joint, electromagnetic field treatment, electrodynamic treatment, residual stresses, fusion welding, surface hardening, titanium carbide, polydisperse mixtures, residual deformations, aluminum alloys, structural steels, dislocation density


Received: 09.05.2025
Received in revised form: 09.06.2025
Accepted: 29.09.2025

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