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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2023-3-327-329</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2554</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕРИАЛОВЕДЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Эволюция структурно-фазового состояния и свойств рельсов из заэвтектоидной стали при длительной эксплуатации</article-title><trans-title-group xml:lang="en"><trans-title>Evolution of structural-phase state and properties of hypereutectoid steel rails at long-term operation</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3602-5739</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Порфирьев</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Porfir’ev</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Анатольевич Порфирьев, научный сотрудник Управления научных исследований</p><p>Россия, 654007, Кемеровская область – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Mikhail A. Porfir’ev, Research Associate of Department of Scientific Researches</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">mport372@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5147-5343</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Громов</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Gromov</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Евгеньевич Громов, д.ф.-м.н., профессор, заведующий кафедрой естественнонаучных дисциплин им. профессора В.М. Финкеля</p><p>Россия, 654007, Кемеровская область – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Viktor E. Gromov, Dr. Sci. (Phys.-Math.), Prof., Head of the Chair of Science named after V.M. Finkel’</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">gromov@physics.sibsiu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3394-7941</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Крюков</surname><given-names>Р. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kryukov</surname><given-names>R. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роман Евгеньевич Крюков, д.т.н., доцент кафедры металлургии черных металлов</p><p>Россия, 654007, Кемеровская область – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Roman E. Kryukov, Dr. Sci. (Eng.), Assist. Prof. of the Chair of Ferrous Metallurgy</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">rek_nzrmk@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>29</day><month>06</month><year>2023</year></pub-date><volume>66</volume><issue>3</issue><fpage>327</fpage><lpage>329</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Порфирьев М.А., Громов В.Е., Крюков Р.Е., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Порфирьев М.А., Громов В.Е., Крюков Р.Е.</copyright-holder><copyright-holder xml:lang="en">Porfir’ev M.A., Gromov V.E., Kryukov R.E.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://fermet.misis.ru/jour/article/view/2554">https://fermet.misis.ru/jour/article/view/2554</self-uri><abstract><p>Методами современного физического материаловедения выполнен анализ эволюции микротвердости, трибологических свойств, дислокационной субструктуры и фазового состава рельсов повышенной износостойкости и контактной выносливости категории ДТ 400 ИК после пропущенного тоннажа 187 млн т брутто на экспериментальном кольце РЖД. Экстремально длительная эксплуатация рельсов сопровождается уменьшением параметра износа поверхности катания (в 3,1 раза), увеличением микротвердости (в 1,4 раза), скалярной плотности дислокаций (в 1,5 раза) и содержания карбида Fe3C (в 1,24 раза). Эксплуатация рельсов привела к уменьшению параметра кристаллической решетки, что коррелирует с ростом содержания карбида железа. Высказаны предположения о физических причинах изменения параметров.</p></abstract><trans-abstract xml:lang="en"><p>The methods of modern physical materials science were used to analyze the evolution of microhardness, tribological properties, dislocation substructure and phase composition of the rails with increased wear resistance and contact endurance of DT 400 IR category after missed tonnage of 187 million gross tons on the experimental ring of Russian Railways. It is shown that extremely long-term operation of the rails is accompanied by a decrease (3.1 times) in wear parameter of the rolling surface and an increase (1.4 times) in microhardness, scalar dislocation density (1.5 times) and Fe3C carbide content (1.24 times). Operation of the rails led to a decrease in the crystal lattice parameter, which correlates with an increase in the content of iron carbide. We made the assumptions about physical causes of the change in parameters.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>рельсы специального назначения</kwd><kwd>структура</kwd><kwd>микротвердость</kwd><kwd>фазовый состав</kwd><kwd>трибологические свойства</kwd></kwd-group><kwd-group xml:lang="en"><kwd>special purpose rails</kwd><kwd>structure</kwd><kwd>microhardness</kwd><kwd>phase composition</kwd><kwd>tribological properties</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы работы выражают благодарность Е.В. Полевому за предоставленные образцы рельсов и Ю.Ф. Иванову за помощь в проведении экспериментов и обсуждении результатов.</funding-statement><funding-statement xml:lang="en">The authors express their gratitude to E.V. Polevoy for the provided samples of rails and Y.F. Ivanov for his help in conducting experiments and discussing the results.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Yuriev A.A., Gromov V.E., Ivanov Yu.F., Rubannikova Yu.A., Starostenkov M.D., Tabakov P.Y. Structure and Pro­perties of Lengthy Rails after Extreme Long Term Operation. Materials Research Forum LLC, 2021;106:193. https://doi.org/10.21741/9781644901472</mixed-citation><mixed-citation xml:lang="en">Yuriev A.A., Gromov V.E., Ivanov Yu.F., Rubannikova Yu.A., Starostenkov M.D., Tabakov P.Y. Structure and Pro­perties of Lengthy Rails after Extreme Long Term Operation. 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