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Volume 14
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10.3390/met14010009
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Article

Strengthening Mechanisms of Rail Steel under Compression

by
Yurii Ivanov
1,*,
Mikhail Porfiriev
2,
Victor Gromov
2,
Natalia Popova
3 and
Yulia Shliarova
2
1
Plasma Emission Electronics Laboratory, Institute of High Current Electronics SB RAS, 634055 Tomsk, Russia
2
Department of Natural Sciences, Siberian State Industrial University, 654007 Novokuznetsk, Russia
3
Department of Physics, Chemistry and Theoretical Mechanics, Tomsk State University of Architecture and Civil Engineering, 634003 Tomsk, Russia
*
Author to whom correspondence should be addressed.
Metals 2024, 14(1), 9; https://doi.org/10.3390/met14010009
Submission received: 15 February 2023 / Revised: 18 March 2023 / Accepted: 12 April 2023 / Published: 20 December 2023
(This article belongs to the Section Computation and Simulation on Metals)
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Abstract

The evolution of the structure–phase states and the dislocation substructure of rail steel under uniaxial compression to the degree of 50% was studied by transmission electron microscopy. The obtained data formed the basis for a quantitative analysis of the mechanisms of rail steel strengthening at degrees of deformation by compressions of 15, 30, and 50%. Contributions to the strengthening caused by the friction of the matrix lattice, dislocation substructure, presence of carbide particles, internal stress fields, solid solution and substructural strengthening, and pearlite component of the steel structure were estimated. Using the adaptivity principle, which assumes the independent action of each of the strengthening mechanisms, the dependence of the rail steel strength on the degree of plastic deformation by compression was estimated. A comparative analysis of the stress–strain curves σ(ε) obtained experimentally and calculated theoretically was performed.
Keywords: stress–strain curve; rail steel; structure; dislocation substructure; strengthening mechanisms; additive yield strength; electron microscopy stress–strain curve; rail steel; structure; dislocation substructure; strengthening mechanisms; additive yield strength; electron microscopy

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MDPI and ACS Style

Ivanov, Y.; Porfiriev, M.; Gromov, V.; Popova, N.; Shliarova, Y. Strengthening Mechanisms of Rail Steel under Compression. Metals 2024, 14, 9. https://doi.org/10.3390/met14010009

AMA Style

Ivanov Y, Porfiriev M, Gromov V, Popova N, Shliarova Y. Strengthening Mechanisms of Rail Steel under Compression. Metals. 2024; 14(1):9. https://doi.org/10.3390/met14010009

Chicago/Turabian Style

Ivanov, Yurii, Mikhail Porfiriev, Victor Gromov, Natalia Popova, and Yulia Shliarova. 2024. "Strengthening Mechanisms of Rail Steel under Compression" Metals 14, no. 1: 9. https://doi.org/10.3390/met14010009

APA Style

Ivanov, Y., Porfiriev, M., Gromov, V., Popova, N., & Shliarova, Y. (2024). Strengthening Mechanisms of Rail Steel under Compression. Metals, 14(1), 9. https://doi.org/10.3390/met14010009

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