vsgiuВестник Сибирского государственного индустриального университетаBulletin of the Siberian State Industrial University2304 - 44972307-1710Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет"10.57070/2304-4497-2023-3(45)-58-71vsgiu-111Research ArticleРаздел 3. Металлургия и материаловедениеSection 3. Metallurgy and Materials ScienceМЕХАНИЗМЫ УПРОЧНЕНИЯ РЕЛЬСОВОЙ СТАЛИ ПРИ СЖАТИИSTRENGTHENING MECHANISMS OF RAIL STEEL UNDER COMPRESSIONhttps://orcid.org/0000-0001-8022-7958ИвановЮрий ФедоровичIvanovYurii F.

д.ф.-м.н., профессор, главный научный сотрудник

Dr. Sci. (Phys.-Math.), Prof., Chief Researcher of the Laboratory of Plasma Emission Electronics

yufi55@mail.ruhttps://orcid.org/0000-0003-3602-5739ПорфирьевМихаил АнатольевичPorfir'evMikhail A.

соискатель кафедры естественнонаучных дисциплин им. проф. В.М. Финкеля

Applicant of the Department of Natural Sciences named after. prof. V.M. Finkel

mporf372@gmail.comhttps://orcid.org/0000-0002-5147-5343ГромовВиктор ЕвгеньевичGromovViktor E.

д.ф.-м.н., профессор, заведующий кафедрой естественнонаучных дисциплин им. профессора В.М. Финкеля

Dr. Sci. (Phys.-Math.), Prof., Head of the Chair of Science named after V.M. Finkel'

gromov@physics.sibsiu.ruПоповаНаталья АнатольевнаPopovaNatal'ya A.

к.т.н., старший научный сотрудник кафедры физики

Cand. Sci. (Eng.), Senior Researcher of the Chair of Physics

popova-44@mail.ruСеренковЮрий СергеевичSerenkovYurii S.

д. культурологии, доцент, заведующий кафедрой филологии

Dr. Sci. (Culture Studies), Assistant Prof., Head of the Chair of of Philology

juriyy-serenkov@rambler.ruhttps://orcid.org/0000-0002-3573-8385СиддикиАршад НурSiddiqueeArshad Nur

д.ф.н., профессор

D.Sci. (Philosophy), Professor

ansiddiqui@jmi.ac.inhttps://orcid.org/0000-0001-8130-648XШляровВиталий ВладиславовичShlyarovVitalii V.

аспирант кафедры естественнонаучных дисциплин им. профессора В.М. Финкеля, научный сотрудник лаборатории электронной микроскопии и обработки изображений

Postgraduate of the Chair of Science named after V.M. Finkel’, Researcher, Laboratory of Electron Microscopy and Image Processing

shlyarov@mail.ruИнститут сильноточной электроники СО РАНРоссияInstitute of High-Current ElectronicsRussian FederationСибирский государственный индустриальный университетRussian FederationSiberian State Industrial UniversityRussian FederationСибирский государственный индустриальный университетRussian FederationSiberian State Industrial UniversityRussian FederationТомский государственный архитектурно-строительный университетRussian FederationTomsk State University of Architecture and BuildingRussian FederationСибирский государственный индустриальный университетRussian FederationSiberian State Industrial UniversityRussian FederationДжамия Миллия ИсламияRussian FederationJamia Millia IslamiaRussian FederationСибирский государственный индустриальный университетRussian FederationSiberian State Industrial UniversityRussian Federation202330092023035871Copyright © Иванов Ю.Ф., Порфирьев М.А., Громов В.Е., Попова Н.А., Серенков Ю.С., Сиддики А.Н., Шляров В.В., 20252025Иванов Ю.Ф., Порфирьев М.А., Громов В.Е., Попова Н.А., Серенков Ю.С., Сиддики А.Н., Шляров В.В.Ivanov Y., Porfir'ev M., Gromov V., Popova N., Serenkov Y., Siddiquee A., Shlyarov V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://vestnik.sibsiu.ru/jour/article/view/111

Деформационное упрочнение сталей – эффективный подход к изменению структурно-фазового состояния и свойств. Понимание механизмов образования структурно-фазовых состояний и свойств перлитной стали при пластической деформации имеет решающее значение для управления процессом деформационного поведения. Важность знаний в этой области обусловлена серьезными проблемами в области физического материаловедения, а также практическими последствиями применения перлитной стали, широко используемой в железнодорожной отрасли. В настоящее время существует большой интерес к пониманию общих зависимостей, характеризующих деформационное упрочнение. Этот интерес связан с возможностью разработки комплексной теории этого явления и исследования дислокационных механизмов, обусловливающих наблюдаемые кривые напряжение – деформация. Примечательно, что были достигнуты успехи в области физики прочности, в частности, в понимании дислокационной структуры бейнитных и мартенситных сталей. Эти достижения способствовали расширению понимания явлений деформационного упрочнения. В настоящей работе методом просвечивающей электронной микроскопии изучена эволюция структурно-фазовых состояний и дислокационной субструктуры рельсовой стали при одноосном сжатии до степени 50 %. Полученные данные легли в основу количественного анализа механизмов упрочнения рельсовой стали при степенях деформации сжатием 15, 30 и 50 %. Проведена оценка вклада в упрочнение, обусловленного трением решетки матрицы, дислокационной субструктурой, наличием карбидных частиц, полями внутренних напряжений, твердорастворным и субструктурным упрочнением, перлитной составляющей структуры стали. С использованием принципа адаптивности, предполагающего независимое действие каждого из механизмов упрочнения, оценена зависимость прочности рельсовой стали от степени пластической деформации сжатием. Проведен сравнительный анализ кривых напряжение – деформация σ(ε), полученных экспериментально и рассчитанных теоретически.

Strain hardening of steels is an effective approach to changing the structural-phase state and properties. Understanding the mechanisms of formation of structural-phase states and properties of pearlitic steel during plastic deformation is crucial for controlling the process of de-formation behavior. The importance of knowledge in this area is due to serious problems in the field of physical materials science, as well as the practical consequences of the use of pearlitic steel, which is widely used in the railway industry. Currently, there is great interest in understanding the general relationships characterizing strain hardening. This interest is associated with the possibility of developing a complex theory of this phenomenon and studying the dislocation mechanisms that determine the observed stress-strain curves σ(ε). It is noteworthy that advances have been made in the field of strength physics, in particular in understanding the dislocation structure of bainitic and martensitic steels. These advances have contributed to expanding our understanding of strain hardening phenomena. Present work the evolution of structural-phase states and dislocation substructure of rail steel under uniaxial com-pression 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 compression 15, 30, 50 %. Contributions to the strengthening caused by the friction of matrix lattice, dislocation substructure, presence of carbide particles, internal stress fields, solid solution and substructural strengthening, pearlite component of the steel structure are estimated. Using the adaptivity principle, which as-sumes the independent action of each of the strengthening mechanisms, the dependence of rail steel strength on the degree of plastic deformation by compression is estimated. A com-parative analysis of the stress-strain curves σ(ε) obtained experimentally and calculated theo-retically is performed.

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The authors declare that there are no conflicts of interest present.