Structure and properties of rails after extremely long-term operation-Reference-Cited by-同舟云学术

Structure and properties of rails after extremely long-term operation

Published:2020-08-27 Issue:2(102) Volume: Page:30-39
ISSN:1994-6716
Container-title:Voprosy Materialovedeniya
language:
Short-container-title:Vopr. materialoved.

Author:

Ivanov Yu. F.¹,Gromov V. E.²,Kormyshev V. E.²,Glezer A. M.³

Affiliation:

1. Institute of High Current Electronics SB RAS

2. Siberian State Industrial University

3. Institute of Metal Science and Physical Metallurgy, Central Research Institute of Ferrous Metallurgy named after I.P. Bardin

Abstract

The paper reveals regularities and mechanisms of structure-phase states and properties formation of of differentially hardened 100-m rails of DT 350 category after the passed tonnage of 1411 mln. tons brutto. The formation of highly defective surface layer with nanosize (40–50 nm) grain-subgrain structure of pearlite colonies and submicrocrystal (150–250 nm) structure grains with structure free ferrite is detected. The change of hardness, microhardness, crystal lattice parameter, microdistorsion level, scalar and excess dislocation density on the rails head section are analyzed. The possible mechanisms of cementite plates’ transformation at extremely long-term operation are discussed.

Publisher

FSUE CRISM Prometey

Reference19 articles.

1. Gromov, V.E., Peregudov, O.A., Ivanov, Yu.F., Konovalov, S.V., Yuriev, A.A.,Evoliutsiyastrukturno-fazovykhsostoyanymetallarelsovpridlitelnoyekspluatatsii[Evolutionof structural-phase states of rails metal during long-term operation], Novosibirsk: SORAN, 2017.

2. Gromov, V.E., Ivanov, Yu.F., Yuriev, A.B., Morozov, K.V., Microstructure of quenched rails, Cambridge: CISP, 2016.

3. Ivanov, Yu.F., Gromov, V.E., Yuriev, A.A., et al. Priroda poverkhnostnogo uprochneniya differentsirovanno zakalennykh relsov pri dlitelnoy ekspluatatsii [The nature of surface hardening of differentially hardened rails during long-term operation], Deformatsiya i razrushenie materialov, 2018, No 4, pp. 67–85.

4. Ivanov, Yu.F., Gromov, V.E., Yuriev, A.A., et al., Gradienty struktury i svoistv poverkhnostnykh sloev differentsirovanno zakalennykh relsov posle dlitelnoy ekspluatatsii [Gradients of the structure and properties of surface layers of differentially hardened rails after long-term operation], Fundamentalnye problemy sovremennogo materialovedeniya, 2017, V. 14, No 3, pp. 297–305.

5. Ivanov, Yu.F., Yuriev, A.A., Gromov, V.E. et al., Preobrazovanie karbidnoy fazy relsov pri dlitelnoy ekspluatatsii [Transformation of the carbide phase of rails during long-term operation], Izvestiya vuzov. Chernaya metallurgiya, 2018, V. 61, No 2, pp. 140–148.

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