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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">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ МИСИС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2021-3-37-45</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1261</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>Литейное производство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Foundry</subject></subj-group></article-categories><title-group><article-title>Влияние церия на фазовый состав и характер кристаллизации литейных алюминиевых сплавов системы Al—Mg—Si</article-title><trans-title-group xml:lang="en"><trans-title>Influence of cerium on the phase composition and crystallization behavior of cast aluminum alloys based on the Al—Mg—Si system</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>Деев</surname><given-names>В. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Deev</surname><given-names>V. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор факультета машиностроения и автоматизации Уханьского текстильного университета; главный научный сотрудник лаборатории «Ультрамелкозернистые металлические материалы», профессор кафедры «Обработка металлов давлением» НИТУ «МИСиС»</p><p>Textile Road, 1, Hongshan District, Wuhan, 430073, P.R. China; 119991, Москва, Ленинский пр-т, 4.</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof. of the School of Mechanical Engineering and Automation of Wuhan Textile University; chief researcher of the Laboratory «Ultrafine-grained metallic materials», prof. of the Department of metal forming of National University of Science and Technology (NUST) «MISIS».</p><p>Textile Road, 1, Hongshan District, Wuhan, 430073, P.R. China; 119991, Russia, Moscow, Leninskii pr., 4.</p></bio><email xlink:type="simple">deev.vb@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прусов</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Prusov</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент кафедры «Технологии функциональных и конструкционных материалов» Владимирского государственного университета им. А.Г. и Н.Г. Столетовых.</p><p>600000, Владимир, ул. Горького, 87.</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), associate prof. of the Department of functional and constructional materials technology, Vladimir State University n.a. A. and N. Stoletovs.</p><p>600000, Vladimir, Gorky str., 87.</p></bio><email xlink:type="simple">eprusov@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шуркин</surname><given-names>П. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shurkin</surname><given-names>P. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, инженер кафедры обработки металлов давлением НИТУ «МИСиС».</p><p>119991, Москва, Ленинский пр-т, 4.</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), engineer of the Department of metal forming, NUST «MISIS».</p><p>119991, Moscow, Leninskii pr., 4.</p></bio><email xlink:type="simple">pa.shurkin@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ри</surname><given-names>Э. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Ri</surname><given-names>E. H.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор, главный научный сотрудник, заведующий кафедрой литейного производства и технологии металлов Тихоокеанского государственного университета.</p><p>680035, Хабаровск, ул. Тихоокеанская, 136.</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof., chief researcher, head of the Department of foundry and metal technology, Pacific National University.</p><p>680035, Khabarovsk, Tikhookeanskaya str., 136.</p></bio><email xlink:type="simple">erikri999@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сметанюк</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smetanyuk</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистрант кафедры литейного производства Сибирского федерального университета.</p><p>660041, Красноярск, пр. Свободный, 4.</p></bio><bio xml:lang="en"><p>Master's student, Department of foundry, Siberian Federal University.</p><p>660041, Krasnoyarsk, Svobodnyi pr., 4.</p></bio><email xlink:type="simple">smetanyuk.sv@mail.ru</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уханьский текстильный университет; Национальный исследовательский технологический университет (НИТУ) «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Wuhan Textile University; National University of Science and Technology (NUST) «MISIS»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Владимирский государственный университет им. А.Г. и Н.Г. Столетовых</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Vladimir State University n.a. A. and N. Stoletovs</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет (НИТУ) «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology (NUST) «MISIS»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Тихоокеанский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pacific National University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Сибирский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>13</day><month>06</month><year>2021</year></pub-date><volume>0</volume><issue>3</issue><fpage>37</fpage><lpage>45</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Деев В.Б., Прусов Е.С., Шуркин П.К., Ри Э.Х., Сметанюк С.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Деев В.Б., Прусов Е.С., Шуркин П.К., Ри Э.Х., Сметанюк С.В.</copyright-holder><copyright-holder xml:lang="en">Deev V.B., Prusov E.S., Shurkin P.K., Ri E.H., Smetanyuk S.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://cvmet.misis.ru/jour/article/view/1261">https://cvmet.misis.ru/jour/article/view/1261</self-uri><abstract><p>В данной работе c помощью расчетов в программе «Thermo-Calc» (база данных TCAl4.0) раскрываются ранее не изученные данные о фазовом составе и характере кристаллизации сплавов системы Al—Mg—Si—Ce в области литейных алюминиево-магниевых сплавов двухфазного состава (Al) + Mg2Si. Показано, что в процессе кристаллизации возможно формирование фаз (Al), Al4Ce, Mg2Si, Al8Mg5. При 4 % Mg и концентрациях (Si + Се) = 1,5 % одновременное повышение Ce и уменьшение Si с точек 0,2 и 1,3 % способствуют последовательному протеканию реакций L + (Al) + Al4Ce и L + (Al) + Al4Ce + Mg2Si; это позволяет предположить, что фаза Al4Ce может ограничивать рост эвтектических включений фазы Mg2Si. Более того, при температуре 20 °C такое изменение концентраций способствует одновременному росту содержаний фаз Al4Ce и Al8Mg5, что также сопровождается снижением количества силицида магния. При добавлении Се в сплав Al—4%Ce—0,5%Si доля Mg2Si практически постоянна во всем интервале кристаллизации (1,34 %), но при этом каждые 0,1 % Ce повышают долю интерметаллида c Ce на 0,17 %, и при 0,7 % Ce доли двух фаз становятся равнозначными. При изучении фазового состава при характерных температурах отжига 400 и 550 °C было выявлено, что вследствие растворения фазы Al8Mg5 происходит пересыщение твердого раствора (Al), и каждые 0,1 % Ce повышают долю Mg в твердом растворе (Al): в первом случае — на 0,005 %, а во втором — на 0,01 %, что свидетельствует о потенциале положительного влияния Се на упрочнение матрицы. На основании результатов был сделан вывод о целесообразности добавления в сплав Ce в количестве до 0,7 %, что незначительно уменьшает температуру ликвидуса (до ~636+638 °C), но на ~30 °C снижает температуру неравновесного солидуса до 421 °C. В то же время при постоянной температуре образования фазы Mg2Si (581 °C) с добавкой Ce расширяется интервал кристаллизации эвтектики (Al) + Al4Ce, что может компенсировать снижение литейных свойств. Сплав Al—4%Ce—0,5%Si—0,7%Ce имеет следующий фазовый состав: Al4Ce — 1,19 %, соотношение [Mg2Si/Al4Ce] = 0,89, доля Al8Mg5 — 7,92 % при 20 °C, концентрации Mg в твердом растворе (Al) — 3,22 и 3,36 % при температурах 400 и 550 °C соответственно. Представленные результаты обосновывают составы и температурные режимы получения литейных алюминиево-магниевых сплавов с церием, оказывающим модифицирующее влияние на эвтектические включения Mg2Si.</p></abstract><trans-abstract xml:lang="en"><p>This study was conducted with calculations made in Thermo-Calc software (TCAl4.0 database) to find out the unexplored data on the phase composition, crystallization behavior of Al—Mg—Si—Ce alloys as regards the compositions of two-phase (Al) + Mg2Si cast aluminum-magnesium alloys. It was shown that (Al), Al4Ce, Mg2Si, Al8Mg5 phases may form during crystallization. At 4% Mg and (Si + Ce) concentrations of 1.5 %, a simultaneous increase in Ce and decrease in Si contents from 0.2 % and 1.3 % points promote consistent reactions L + (Al) + Al4Ce and L + (Al) + Al4Ce + Mg2Si. This suggests that the Al4Ce phase may hinder the growth of Mg2Si phase eutectic inclusions. Moreover, at 20 °C such a change in concentrations promotes a simultaneous decrease in the contents of Al4Ce and Al8Mg5 phases, along with a decrease in the amount of magnesium silicide. While adding Ce in the Al—4%Ce—0.5%Si alloy, the fraction of Mg2Si is approximately constant throughout the entire crystallization range (1.34 %), but each 0.1% Ce increases the Ce-bearing intermetallic fraction by 0.17 %, and at 0.7 % Ce the proportions of two phases are equal. When studying the phase composition at representative annealing temperatures of 400 и 550 °C, it was revealed that the (Al) solid solution becomes supersaturated as a result of Al8Mg5 phase dissolving. Each 0.1% Ce increases the Mg content in the (Al) solid solution by 0.005 % in the first case and by 0.01 % in the second one. This indicates a potentially positive influence of Ce on matrix strengthening. Based on the results, it was concluded that it is advisable to add Ce in an amount of up to 0.7 %, which slightly reduces the liquidus temperature (to ~636+638 °C), but reduces the non-equilibrium solidus temperature by ~30 °C to 421 °C. At the same time, at a constant Mg2Si phase formation temperature (581 °C), the eutectic crystallization range (Al)+Al4Ce expands with Ce addition, which can compensate for the decrease in casting properties. The Al—4%Ce—0.5%Si—0.7% Ce alloy has the following phase composition: Al4Ce 1.19 %, the [Mg2Si/Al4Ce] ratio = 0.89, Al8Mg5 fraction is 7.92 % at 20 °C, Mg concentrations in the (Al) solid solution are 3.22 % and 3.36 % at temperatures of 400 °C and 550 °C, respectively. The presented results serve as the basis for subsequent experiments and justify compositions and temperature conditions for obtaining cast aluminum-magnesium alloys with cerium having a modifying effect on Mg2Si eutectic inclusions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>литейные алюминиевые сплавы</kwd><kwd>Thermo-Calc</kwd><kwd>диаграммы состояния</kwd><kwd>кристаллизация</kwd><kwd>фазовый состав</kwd><kwd>эвтектика</kwd><kwd>фаза Mg2Si</kwd></kwd-group><kwd-group xml:lang="en"><kwd>casting aluminum alloys</kwd><kwd>Thermo-Calc</kwd><kwd>phase diagrams</kwd><kwd>crystallization</kwd><kwd>phase composition</kwd><kwd>eutectic</kwd><kwd>Mg2Si phase</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда (проект № 20-19-00687).</funding-statement><funding-statement xml:lang="en">The research was funded by the Russian Science Foundation grant (Project № 20-19-00687).</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">Белов Н.А. 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