The Paton Welding Journal, 2023, №01



2023 №01 (01)

DOI of Article 10.37434/tpwj2023.01.02

2023 №01 (03)

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The Paton Welding Journal, 2023, #1, 11-15 pages

Influence of the frequency of external electromagnetic field on the structure of 09G2S steel welded joints

O.D. Razmyshlayev, S.Yu. Maksymov, O.M. Berdnikova, O.O. Prylypko, O.S. Kushnarjova, T.O. Alekseenko

E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

Abstract
Features of metal structure in 09G2S steel welded joints were studied in welding with application of a longitudinal external electromagnetic field. The influence of field frequency (f = 2; 12; 50 Hz) on phase composition, microstructure and microhardness of welded joint metal was studied. It was found that significant changes of structural parameters in the weld metal and in the subzones of the heat-affected zone (HAZ) take place in the studied frequency range. The influence of frequency of electromagnetic impact in low-alloyed steel welding is more pronounced in the metal of the weld and HAZ in the overheated subzone (coarse grain). Application of f = 12 Hz ensured a uniform microhardness level both in the weld metal and in the HAZ subzones, as well as grain structure refinement in the overheated subzone (І HAZ) of 09G2S steel welded joint. 15 Ref., 2 Tabl., 3 Fig.
Keywords: 09G2S steel, welded joints, external electromagnetic impact, longitudinal magnetic field, frequency, heat-affected zone, phase composition, microstructural parameters, microhardness

Received: 16.12.2022
Accepted: 28.02.2023

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