The Paton Welding Journal, 2026, №03

2026 №03 (03)

2026 №03 (05)

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The Paton Welding Journal, 2026, #3, 31-35 pages

Residual welding stresses in the AMg6 alloy after electrodynamic treatment under conditions of preliminary elastic tension

L.M. Lobanov¹, V.V. Lysak¹, O.L. Mikhodui¹, O.M. Timoshenko¹, M.O. Pashchyn¹, I.P. Kondratenko², V.V. Chopyk², O.M. Karlov²

¹E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: svarka2000@ukr.net
²Institute of Electrodynamics of the NASU 56 Beresteysky Prosp., 03057, Kyiv, Ukraine

Abstract
A concept for regulating the residual stress-strain states of welded joints based on the combined use of electrodynamic treatment (EDT) of the weld metal preloaded with elastic tension (PET) has been proposed. It is shown that the use of EDT creates prerequisites for reducing the metal intensity and rigidity of the tooling for PET. It has been proved that the combined use of PET and EDT methods can contribute to the synergy of mechanisms for reducing residual welding stresses, which is based on the effect of electroplasticity realized under conditions of preliminary elastic deformation of a welded joint. It has been established that the use of EDT of the AMg6 alloy welded joints under PET conditions allows applying a 50 % lower load level σPET to reduce residual tensile welding stresses unlike without the use of EDT. It has been proven that PET of a welded joint at σPET = 90 MPa and the combined use of EDT and PET (at a similar value σPET), respectively, contribute to a reduction in residual tensile welding stresses in the AMg6 alloy by 20 and 85 %, respectively. The use of EDT creates the prerequisites for reducing the metal intensity and rigidity of the tooling for PET and will contribute to the development of methods for regulating residual stress states of welded joints based on their preload.
Keywords: current pulse, welded structures, residual stresses, welded joint, electroplastic effect, preliminary elastic tension, plastic deformation, aluminium alloy, electrodynamic treatment, stress reduction

Received: 27.11.2025
Received in revised form: 14.01.2026
Accepted: 09.03.2026

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Suggested Citation

L.M. Lobanov, V.V. Lysak, O.L. Mikhodui, O.M. Timoshenko, M.O. Pashchyn, I.P. Kondratenko, V.V. Chopyk, O.M. Karlov (2026) Residual welding stresses in the AMg6 alloy after electrodynamic treatment under conditions of preliminary elastic tension. The Paton Welding J., 03, 31-35.

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