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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">10.17073/0368-0797-2022-12-895-903</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2455</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>ФИЗИКО-ХИМИЧЕСКИЕ ОСНОВЫ МЕТАЛЛУРГИЧЕСКИХ ПРОЦЕССОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICO-CHEMICAL BASICS OF METALLURGICAL PROCESSES</subject></subj-group></article-categories><title-group><article-title>Влияние стронция на природу фазовых равновесий в жидком металле, содержащем кальций и алюминий</article-title><trans-title-group xml:lang="en"><trans-title>Strontium effect on the nature of phase equilibria in liquid metal containing calcium and aluminum</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5535-4875</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлов</surname><given-names>Г. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailov</surname><given-names>G. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Геннадий Георгиевич Михайлов, д.т.н., профессор кафедры материаловедения и физико-химии материалов</p><p>Россия, 454080, Челябинск, пр. В.И. Ленина, 76</p></bio><bio xml:lang="en"><p>Gennadii G. Mikhailov, Dr. Sci. (Eng.), Prof. of the Chair of Materials Science and Physical Chemistry of Materials</p><p>76 Lenina Ave., Chelyabinsk 454080, Russian Federation</p></bio><email xlink:type="simple">mikhailovgg@susu.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/0000-0001-8581-1475</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макровец</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Makrovets</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лариса Александровна Макровец, инженер кафедры мате­риаловедения и физико-химии материалов</p><p>Россия, 454080, Челябинск, пр. В.И. Ленина, 76</p></bio><bio xml:lang="en"><p>Larisa A. Makrovets, Engineer of the Chair of Materials Science and Physical Chemistry of Materials</p><p>76 Lenina Ave., Chelyabinsk 454080, Russian Federation</p></bio><email xlink:type="simple">makrovetcla@susu.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/0000-0003-0825-717X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бакин</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakin</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Игорь Валерьевич Бакин, начальник отдела инновации, модернизации и технического развития, ООО НПП Технология, преподаватель кафедры материаловедения и физико-химии материалов, Южно-Уральский государственный университет</p><p>Россия, 454080, Челябинск, пр. В.И. Ленина, 76</p><p>Россия, 454901, Челябинск, п. Водрем 40, 25</p></bio><bio xml:lang="en"><p>Igor’ V. Bakin, Head of the Division of Innovation, Modernization and Technical Development, LLC RPE Technology, Lecturer of the Chair of Materials Science and Physical Chemistry of Materials, South Ural State University</p><p>76 Lenina Ave., Chelyabinsk 454080, Russian Federation</p><p>25 Vodrem Vil. – 40, Chelyabinsk 454901, Russian Federation</p></bio><email xlink:type="simple">igor.npp.bakin@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет; ООО НПП Технология</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University; LLC RPE Technology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>31</day><month>12</month><year>2022</year></pub-date><volume>65</volume><issue>12</issue><fpage>895</fpage><lpage>903</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Михайлов Г.Г., Макровец Л.А., Бакин И.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Михайлов Г.Г., Макровец Л.А., Бакин И.В.</copyright-holder><copyright-holder xml:lang="en">Mikhailov G.G., Makrovets L.A., Bakin I.V.</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/2455">https://fermet.misis.ru/jour/article/view/2455</self-uri><abstract><p>Применение комплексных стронцийсодержащих сплавов со щелочноземельными металлами для внепечной обработки стали позволяет повысить эффективность процесса рафинирования и модифицирования стали. На основании бинарных диаграмм состояния двойных систем SrO – CaO, SrO – Al2O3 , Al2O3 – CaO и данных о возможности образования твердых растворов смоделирована диаграмма состояния системы SrO – Al2O3 – CaO в интервале температур 1600 – 2600 °С. При построении линий ликвидуса для расчета активностей компонентов использованы теории совершенных растворов (для твердых растворов алюминатов стронция и кальция), регулярных растворов (для твердых растворов оксидов) и субрегулярных ионных растворов (для оксидного расплава). Проведен термодинамический анализ системы Fe – Sr – Ca – Al – O применительно к процессам рафинирования стали сплавами с кальцием и стронцием при температуре 1600 °С. Результаты моделирования показали, что в процессе рафинирования стали, раскисленной алюминием, будет реализовываться комплексный механизм взаимодействия активных элементов с кислородом. При этом взаимодействие кальция и стронция с кислородом происходит как для растворенных в железе элементов, так и по границе газовой фазы, содержащей кальций и стронций, с расплавом жидкого железа. В результате взаимодействия кальция и стронция с кислородом в присутствии алюминия (0,05 %) высока вероятность образования жидких оксидных расплавов SrO – Al2O3 – CaO, что существенно облегчает удаление продуктов реакции из расплава. Образующиеся неметаллические включения с наибольшей вероятностью являются сложными алюминатами кальция и стронция, которые благодаря наличию стронция легко ассимилируются шлаком. Образование нежелательных включений корунда при обработке металла комплексными сплавами со стронцием и кальцием маловероятно.</p></abstract><trans-abstract xml:lang="en"><p>The use of complex strontium-containing alloys with alkaline earth metals for ladle refining of steel allows the efficiency of steel refining and modifying to be improved. Based on binary state diagrams of double systems SrO – CaO, SrO – Al2O3 , Al2O3 – CaO and data on the possibility of formation of solid solutions, the state diagram of the SrO – Al2O3 – CaO system in the temperature range of 1600 – 2600 °С was simulated. Theories of perfect solutions (for solid solutions of strontium and calcium aluminates), regular solutions (for solid oxide solutions) and subregular ionic solutions (for oxide melt) were used to build the liquidus lines. The thermodynamic analysis of the Fe – Sr – Ca – Al – O system as applicable to steel refining processes with calcium and strontium alloys at 1600 °С was carried out. Simulation results show that the complex mechanism of interaction of active elements with oxygen will be implemented in the process of refining steel deoxidized with aluminum. In this case calcium and strontium interaction with oxygen occurs both for elements dissolved in iron, and at the boundary of the gas phase containing calcium and strontium with molten liquid iron. The interaction of calcium and strontium with oxygen in the presence of aluminum (0.05 %) results in a high probability of formation of SrO – Al2O3 – CaO liquid oxide melts. This greatly facilitates the removal of reaction products from the melt. The resulting non-metallic inclusions are most likely complex calcium and strontium aluminates which are easily assimilated by slag due to the presence of strontium. The formation of undesirable corundum inclusions when treating metal with complex alloys containing strontium and calcium is unlikely.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термодинамика</kwd><kwd>моделирование</kwd><kwd>диаграмма состояния</kwd><kwd>стронций</kwd><kwd>алюминий</kwd><kwd>кальций</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermodynamics</kwd><kwd>modeling</kwd><kwd>phase diagram</kwd><kwd>strontium</kwd><kwd>aluminium</kwd><kwd>calcium</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Правительства РФ (Постановление № 211 от 16.03.2013 г.), соглашение № 02.A03.21.0011.</funding-statement><funding-statement xml:lang="en">The work was supported by the Government of the Russian Federation (Resolution No. 211 of March 16, 2013), agreement No. 02.A03.21.0011.</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">Рябчиков И.В., Мизин В.Г., Усманов Р.Г., Голубцов В.А., Милюц В.Г. 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