Issues »  Volume 40, Issue 7

Features of Formation by Rapid Heat Treatment of a Microstructure and Mechanical Properties of Hot-Rolled Low-Carbon Steels of a Rolled Products Range

R. V. Teliovich, J. A. Garasym, N. O. Bondarevska

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

Received: 28.03.2018. Download: PDF

The work is devoted to the study of the structural features and mechanical properties of the hot-rolled low-carbon Fe–Mn–C steels after rapid heat treatment. As shown, the rapid heating to relatively high temperatures makes it possible to form a fine-grained austenite structure in steels, which is characterized by high dimensional homogeneity of the grains, due to the suppression of the process of their intensive growth. In comparison with the hot-rolled state, the high-speed normalization leads to a significant increase in the toughness of steels and a reduction in the cold-brittle temperature in all directions of the rolled product. In the rolling plane, the amount of fracture work is maximal and practically independent on the test temperature up to the cold-brittle temperature. The evaluation of the role of individual structural factors in the formation of spatial anisotropy of the viscosity index of heat-treated steels is presented.

Key words: rolling, deformation, Fe–Mn–C steel, austenite, ferrite, perlite, toughness, stratification, anisotropy.

URL: http://mfint.imp.kiev.ua/en/abstract/v40/i07/0877.html

DOI: https://doi.org/10.15407/mfint.40.07.0877

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

Citation: R. V. Teliovich, J. A. Garasym, and N. O. Bondarevska, Features of Formation by Rapid Heat Treatment of a Microstructure and Mechanical Properties of Hot-Rolled Low-Carbon Steels of a Rolled Products Range, Metallofiz. Noveishie Tekhnol., 40, No. 7: 877—907 (2018) (in Russian)

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