Electrometallurgy Today, 2021, №02



2021 №02 (05)

DOI of Article 10.37434/sem2021.02.06

2021 №02 (07)

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Electrometallurgy Today (Sovremennaya Elektrometallurgiya), 2021, #2, 40-46 pages

Improvement of the procedure of analysis of thermokinetic diagrams of phase transformations in metal of high-strength low-alloy steel welds

V.A. Kostin, V.V. Zhukov

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

Abstract
A new improved procedure is proposed for studying critical temperature phase transformations in high-strength lowalloy steels and their welded joints, which consists in approximation of the dependence of thermal expansion factor on temperature and separation of structural transformation from thermal expansion. For detailed determination of the features of transformations in the metal of welds of high-strength low-alloy steels it is proposed to use kinetic parameters of transformation: volume effect of transformation (S), maximum value of transformation intensity (Vmax), temperature of maximum intensity of transformations (TV). Ref. 12, Tabl. 1, Fig. 8.
Keywords: diagram of austenite decomposition; phase transformations; critical temperatures; automatic welding; weld metal; powder inoculators, microstructure

Received 22.01.2021

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