| 2025 №08 (03) | 2025 №08 (05) |
The Paton Welding Journal, 2025, #8, 37-43 pages
Electrodynamic treatment for the control of residual stresses in welded joints made of light, heat-resistant alloys and austenitic steel
L.M. Lobanov, M.O. Pashchyn, O.L. Mikhodui, O.M. Tymoshenko
E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: olha.mikhodui@gmail.comAbstract
The technology of electrodynamic treatment (EDT) of experimental specimens of thin-sheet butt welded joints made of Al-, Niand Ti-based alloys and austenitic steel was developed and implemented. Specialized assembly tooling was designed, which was used for automatic TIG welding of experimental specimens. The effect of EDT on the residual stress states of welded joint specimens was studied using the electron speckle interferometry method. It was found that EDT is an effective mechanism for the control of the residual stress states of welded joints made of Al and Ti alloys and austenitic steel. It is shown that in order to increase the effectiveness of EDT of Ni-based alloys, it is necessary to use higher values of electrodynamic effect power in further studies. It is also advisable to use a new treatment method based on magnetic pulsed effects on nonferromagnetic materials to optimize the residual stress states of welded joints made of Ni-based alloys.
Keywords: Al-, Ni-, Ti-based alloys, austenitic steel, electrodynamic treatment, transport structures, welded joints, electron speckle interferometry, residual stress states, mechanical characteristics, chemical composition, treatment effectiveness, residual stress control
Received: 15.04.2025
Received in revised form: 19.06.2025
Accepted: 05.08.2025
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