Automatic Welding, 2024, №05



2024 №05 (02)

DOI of Article 10.37434/as2024.05.03

2024 №05 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #5, 2024, pp. 25-31

Dispersed carbide effect on the kinetics of weld metal structural transformations

V.V. Holovko, V.A. Kostin, V.V. Zhukov

E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: v_golovko@ukr.net

The results of research on the influence of inoculation of refractory titanium and silicon carbide particles into the weld pool are presented. It is shown that inoculation of the weld metal with silicon carbides leads to an increase in the temperatures of the bainitic transformation beginning and end and a decrease in its temperature range in comparison with the basic version. Strength values decrease, and ductility and toughness increase in relation to the basic version. Inoculation of the weld pool with refractory TiC particles influences the structural transformation temperature of the hardening metal and its mechanical properties. Both the beginning and end temperature of the bainite transformation increases, that is bainite formation occurs in the higher temperature region, and the temperature range of this region narrows (the transformation kinetics increases). 13 Ref., 3 Tabl., 4 Fig.
Keywords: welding, microstructure, dispersed carbides, weld pool inoculation, bainitic transformation


Received: 26.06.2024
Received in revised form: 06.08.2024
Accepted: 14.10.2024

References

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