Influence of Heat Treatment on the Microstructure and Low-Temperature Performance of Low-Carbon Steel
- Authors: Bagmet O.A.1, Sokolova M.Y.1, Naumenko V.V.1
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Affiliations:
- AO Vyksunskii Metallurgicheskii Zavod
- Issue: Vol 48, No 7 (2018)
- Pages: 463-471
- Section: Article
- URL: https://journals.rcsi.science/0967-0912/article/view/180225
- DOI: https://doi.org/10.3103/S0967091218070021
- ID: 180225
Cite item
Abstract
In the present work, 20L and 20GL steels are investigated with a view to increase in their impact strength at negative temperatures, by adjusting the structural state in final heat treatment of valve and pipeline components. Stable impact strength KCV may be established in 20L steel at –40°C and in 20GL steel at ‒60°C by three-stage heat treatment: double quenching in water and subsequent high tempering. The other three heat treatments considered proved ineffective. The greater strength of 20GL steel components in comparison with 20L steel components may be attributed to its finer structure and greater bulk content of acicular α phase, on account of the higher content of manganese, which deters the ferrite transformation of austenite.
About the authors
O. A. Bagmet
AO Vyksunskii Metallurgicheskii Zavod
Email: naumenko_vv@vsw.ru
Russian Federation, Vyksa, 607060
M. Yu. Sokolova
AO Vyksunskii Metallurgicheskii Zavod
Email: naumenko_vv@vsw.ru
Russian Federation, Vyksa, 607060
V. V. Naumenko
AO Vyksunskii Metallurgicheskii Zavod
Author for correspondence.
Email: naumenko_vv@vsw.ru
Russian Federation, Vyksa, 607060