Formation of microstructure, phase composition and mechanical properties of high-carbon bearing steel at various stages of processing

Sevalnev G.S., Dulnev K.V., Korobova E.N., Sevalneva T.G.
UDC
621.78
DOI
10.18577/2307-6046-2026-0-5-3-12
Article PDF (Russian) (1.32 MB)
How to cite
Sevalnev G.S., Dulnev K.V., Korobova E.N., Sevalneva T.G. Formation of microstructure, phase composition and mechanical properties of high-carbon bearing steel at various stages of processing // Proceedings of VIAM. 2026. No. 5. DOI: 10.18577/2307-6046-2026-0-5-3-12. URL: https://test.viam.ru/en/journal/2026/5/1
Keywords
high carbon bearing steel, microstructure, phase composition, mechanical properties, martensite, austenite, cold treatment
Abstract

The paper investigates the microstructure, phase composition and mechanical properties of high-carbon bearing steel of the С–Cr–Mo–W–V–Nb alloying system under various heat treatment regimes. It has been established that the application of multi-stage tempering (up to 5 cycles) and cold treatment allows for effective control of the steel’s phase composition, achieving a martensite content up to 90 %. With optimal heat treatment, the steel demonstrates tensile strength up to 2620 MPa, yield strength of 2160 MPa, relative elongation of 6 %, and reduction of area of 8 %.

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