Issues »  Volume 46, Issue 10

Features of Formation of Layered Grain Structure During Speed Austenitization of Hot-Deformed Sheet Steel 30ХГН2МА

 R. V. Tel’ovych , Yu. A. Harasym, N. O. Bondarevs’ka, V. I. Bondarchuk

G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 16.04.2024; final version - 08.07.2024. Download: PDF

The paper presents the results of a study of the influence of the temperature and rate (2–30 K·s-1) of heating on the formation of the grain structure of the newly-formed austenite in high-strength low-alloyed steel 30ХГН2МА of a sheet assortment manufactured by hot rolling (ARMOX-500 type). As shown in the process of industrial production, in sheet steel, a tempered martensite structure with a layer-by-layer distribution of austenite grains of different sizes is formed. As revealed, the use of accelerated heating during austenitization of steel contributes to the dispersion of the grain structure of the newly-formed austenite and the preservation of the spatial inhomogeneity of the distribution of its grain sizes.

Key words: armour steel, heat treatment, heating rate, hardening, austenite grain, structure, distribution histograms.

URL: https://mfint.imp.kiev.ua/en/abstract/v46/i10/0963.html

DOI: https://doi.org/10.15407/mfint.46.10.0963

PACS: 61.66.Dk, 61.72.Ff, 61.72.Mm, 62.20.fk, 81.30.Kf, 81.40.Ef, 81.40.Lm

Citation:  R. V. Tel’ovych , Yu. A. Harasym, N. O. Bondarevs’ka, and V. I. Bondarchuk, Features of Formation of Layered Grain Structure During Speed Austenitization of Hot-Deformed Sheet Steel 30ХГН2МА, Metallofiz. Noveishie Tekhnol., 46, No. 10: 963—974 (2024) (in Ukrainian)

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