Electrometallurgy Today, 2024, №04



2024 №04 (05)

DOI of Article 10.37434/sem2024.04.06

2024 №04 (07)

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Electrometallurgy Today (Suchasna Elektrometallurgiya), 2024, #4, 41-50 pages

Modification and micro alloying of the metal of welds on high-strength low-alloy steels produced by fusion welding method (Review)

M.Р. Reminnyi¹, V.A. Kostin², V.V. Zhukov²

¹Kyiv Academic University. 36 Acad. Vernadskyi Blvd., 03142, Kyiv, Ukraine. E-mail: info@kau.org.ua
²E.O. Paton Electric Welding Institute of the NAS of Ukraine 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: valerykkos@gmail.com

Abstract
The paper considers various aspects of the modification of weld metal of high-strength low-alloy steels with dispersed particles of various compounds. The essence and relationship of the processes is highlighted in the context of improving the mechanical properties of the weld metal. The methods and technologies of modification of the structure of high-strength low-alloy steels and their welded joints were analyzed. The use of various technologies and methods of introducing modifiers into the liquid weld pool is considered, with determination of their effectiveness and impact on the quality of the final product. The influence of different types of modifiers on structure formation, features of the kinetics of phase transformations, structural and chemical liquation and mechanical properties of the resulting welded joints have been analyzed. Particular attention is paid to the aspects of nanomodification of weld metal, determining its advantages and disadvantages. 37 Ref., 7 Fig.
Keywords: high-strength low-alloy steels, modification, microalloying, microstructure, mechanical properties, automatic welding, weld metal, liquation, nanoparticles

Received: 03.09.2024
Received in revised form:02.10.2024
Accepted: 22.11.2024

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