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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">vestift</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-технических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physical-technical series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8358</issn><issn pub-type="epub">2524-244X</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8358-2026-71-3-212-220</article-id><article-id custom-type="elpub" pub-id-type="custom">vestift-953</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, МЕТАЛЛУРГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS SCIENCES AND ENGINEERING, METALLURGY</subject></subj-group></article-categories><title-group><article-title>Особенности кинетики фазовых превращений в аусферритно-карбидных чугунах класса CADI</article-title><trans-title-group xml:lang="en"><trans-title>Features of the phase transformation kinetics in ausferritic-carbidic cast irons of the CADI class</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Волочко</surname><given-names>А. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Volochko</surname><given-names>A. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Волочко Александр Тихонович – доктор технических наук, профессор, начальник отдела материаловедения и литейно-деформационных технологий – заведующий лабораторией микрокристаллических и аморфных материалов</p><p>ул. Академика Купревича, 10, 220084, Минск</p></bio><bio xml:lang="en"><p>Alexander T. Volochko – Dr. Sci (Engineering), Professor, Head of the Department of Materials Science and Casting and Deformation Technologies – Head of the Laboratory of Microcrystalline and Amorphous Materials</p><p>10, Academician Kuprevich St., 220084, Minsk</p></bio><email xlink:type="simple">volochkoat@mail.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/0009-0006-4080-5278</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ковалько</surname><given-names>М. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kovalko</surname><given-names>M. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ковалько Михаил Сергеевич – кандидат технических наук, заместитель начальника отдела материаловедения и литейно-деформационных технологий</p><p>ул. Академика Купревича, 10, 220084, Минск</p></bio><bio xml:lang="en"><p>Mikhail S. Kovalko – Cand. Sci. (Engineering), Deputy Head of the Department of Materials Science and Casting and Deformation Technologies </p><p>10, Academician Kuprevich St., 220084, Minsk</p></bio><email xlink:type="simple">kovalko.m@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Физико-технический институт Национальной академии наук Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Physical-Technical Institute of the National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>29</day><month>09</month><year>2026</year></pub-date><volume>71</volume><issue>3</issue><fpage>212</fpage><lpage>220</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Волочко А.Т., Ковалько М.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Волочко А.Т., Ковалько М.С.</copyright-holder><copyright-holder xml:lang="en">Volochko A.T., Kovalko M.S.</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://vestift.belnauka.by/jour/article/view/953">https://vestift.belnauka.by/jour/article/view/953</self-uri><abstract><p>Проведен анализ терминологии и особенностей структурообразования высокопрочных чугунов классов ADI и CADI. Дано обоснование термина «аусферрит» для описания металлической матрицы, формирующейся при изотермической закалке. Отмечено, что ключевым отличием двухфазной (феррит + аустенит) бейнитоподобной структуры от мартенсита является диффузионный механизм перераспределения углерода, полностью подавляющий выделение карбидов. Показаны экспериментальные данные, подтверждающие механизм деформационного мартенситного превращения (TRIP-эффект) в сплавах CADI, который обеспечивает повышение прочности и износостойкости. Основное внимание уделено исследованию кинетики распада переохлажденного аустенита в CADI. Экспериментально установлено и теоретически обосновано влияние карбидной фазы на гетерогенное зарождение перлита и аусферрита, что отображается в необходимости повышения критической скорости закалки по сравнению с ADI для подавления диффузионного распада и формирования аусферритной структуры. Полученные данные могут найти широкое применение в промышленности (машиностроение, литейное производство) при получении отливок изделий, работающих в условиях ударно-абразивного износа.</p></abstract><trans-abstract xml:lang="en"><p>The paper provides an analysis of the terminology and structural features of high-strength cast irons of the ADI and CADI classes. A rationale is provided for the term “ausferrite” to describe the metallic matrix formed during isothermal quenching. It is noted that the key distinction of the two-phase (ferrite + austenite) bainite-like structure from martensite is the diffusional mechanism of carbon redistribution, which completely suppresses carbide precipitation. Experimental data confirming the mechanism of deformation-induced martensitic transformation (TRIP effect) in CADI alloys, which provides increased strength and wear resistance, are presented. The main focus is on investigating the kinetics of supercooled austenite decomposition in CADI. The influence of the carbide phase on the heterogeneous nucleation of pearlite and ausferrite has been experimentally established and theoretically substantiated, which is reflected in the need to increase the critical quenching rate compared to ADI in order to suppress diffusional decomposition and form an ausferritic structure. The obtained data can find wide application in industry (mechanical engineering, foundry production) in the manufacture of castings for components operating under impact-abrasive wear conditions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аусферрит</kwd><kwd>карбиды</kwd><kwd>чугун</kwd><kwd>CADI</kwd><kwd>ADI</kwd><kwd>TRIP-эффект</kwd><kwd>кинетика превращений</kwd><kwd>феррит</kwd><kwd>гетерогенное зарождение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>ausferrite</kwd><kwd>carbides</kwd><kwd>cast iron</kwd><kwd>CADI</kwd><kwd>ADI</kwd><kwd>transformation kinetics</kwd><kwd>ferrite</kwd><kwd>heterogeneous nucleation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">работа выполнена при финансовой поддержке Белорусского республиканского фонда фундаментальных исследований (грант № Т25МС-002).</funding-statement><funding-statement xml:lang="en">this work was supported by the Belarusian Republican Foundation for Basic Research (grant no. 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