Automatic Welding, 2026, №01

2026 №01 (01)

DOI of Article 10.37434/as2026.01.02

2026 №01 (03)

---

"Avtomatychne Zvaryuvannya" (Automatic Welding), #1, 2026, pp. 11-16

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

L.M. Lobanov¹, V.V. Lysak¹, O.L. Mikhoduj¹, O.M. Timoshenko¹, M.O. Pashchyn¹, I.P. Kondratenko², V.V. Chopyk², O.M. Karlov²

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

A concept for regulating the residual stress-strain states of welded joints based on the combined use of electrodynamic treatment (EDT) of weld metal that is preloaded with elastic tension (PET) is proposed. It is shown that the use of EDT creates prerequisites for reducing the metal consumption and stiffness of tooling for PET. It is 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, which is realized under conditions of preliminary elastic deformation of a welded joint. It has been established that the use of EDT of AMg6 alloy welded joints under PET conditions allows applying a 50 % lower load level σPET to reduce residual tensile welding stresses unlike in the absence 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 of σPET), respectively, contribute to a reduction in residual tensile welding stresses in AMg6 alloy by 20 % and 85 %, respectively. The use of EDT creates the prerequisites for reducing the metal consumption and stiffness of the tooling for PET and will contribute to the development of methods for regulating the residual stress states of welded joints based on their preload. Ref. 14, Table 1, Fig. 4.
Keywords: current pulse, welded structures, residual stresses, welded joint, electroplastic effect, preliminary elastic tension, plastic deformation, aluminium alloy, electrodynamic treatment, stress reduction


Received: 08.07.2025
Received in revised form: 27.11.2025
Accepted: 14.01.2026

References

1. Nedoseka, A.Ya. (2001) Fundamentals of calculation and diagnostics of welded structures. Kyiv, INDPROM [in Russian].
2. Vinokurov, V.A., Grigoryants, A.G. (1984) Theory of welding stresses and strains. Moscow, Mashinostroenie [in Russian].
3. Lobanov, L.M., Makhnenko, V.I., Velikoivanenko, E.A. et al. (1988) About parameters of preliminary out-of-plane bending for spherical shells. Avtomaticheskaya Svarka, 9, 1-4 [in Russian].
4. Paton, B.E., Utkin, V.F., Lobanov, L.M. et al. (1989) Manufacturing of large-sized thin-walled panels from aluminium alloys. Avtomaticheskaya Svarka, 10, 10-18 [in Russian].
5. Kravtsov, T.G., Ryzhkov, I.F., Statnikov, E.Sh. (1981) Increase in fatigue resistance of surfaced shafts by ultrasonic treatment. Avtomaticheskaya Svarka, 10, 35-38 [in Russian].
6. Makhnenko, V.I., Kravtsov, T.G. (1986) Thickness of plastically deformed layer in utrasonic peening of surfaced products. Avtomaticheskaya Svarka, 8, 98-110 [in Russian].
7. Conrad, H., Sprecher, A. (1989) The electroplastic effect in metals. Elsevier Science Publishers B.V., Dislocations in Solids, Ed. by F.R.N. Nabarro, 500-529.
8. Lobanov, L.M., Pashchin, N.A., Loginov, V.P., Poklyatsky, A.G. (2010) Effect of electric pulse treatment on residual change in shape of thin-sheet welded structures (Review). The Paton Welding J., 3, 10-13.
9. Strizhalo, V.A., Novogrudskiy, L.S., Vorobiov, E.V. (2008) Strength of materials at cryogenic temperatures taking into account electromagnetic field action. Kyiv, IPS [in Russian].
10. Stepanov, G.V., Babutskiy, A.I., Mameev, I.A. (2004) Nonstationary stress-strain state in a long rod caused by a high-density pulse of electric current. Problemy Prochnosti, 4, 60-67 [in Russian].
11. Lobanov, L.M., Pashсhin, N.A., Mikhodui, O.L. (2012) Influence of the loading conditions on the deformation resistance of AMg6 alloy during electrodynamic treatment. Strength of Materials, 44, 472-479. https://doi.org/10.1007/s11223-012-9401-6
12. Lobanov, L.M., Makhnenko, V.I., Pashchin, N.A., Loginov, V.P. (2007) Features of formation of plastic deformations at electrodynamic treatment of welded joints of St3 steel. The Paton Welding J., 10, 7-11.
13. Semashko, N.A., Krupskiy, R.F., Kupov, A.V. et al. (2004) Acoustic emission at electric pulse deformation of titanium alloys. Materialovedenie, 7, 29-33 [in Russian].
14. Kasatkin, B.S., Prokhorenko, V.M., Chertov, I.M. (1987) Stresses and strains during welding. Kyiv, Vyshcha Shkola [in Russian].

---

Advertising in this issue:

---