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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">10.17073/0021-3438-2020-6-76-86</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1204</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>Металловедение и термическая обработка</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Physical Metallurgy and Heat Treatment</subject></subj-group></article-categories><title-group><article-title>Особенности структурообразования в сплаве системы Al–Fe–Mn при кристаллизации с различными скоростями охлаждения</article-title><trans-title-group xml:lang="en"><trans-title>Features of structure formation in Al–Fe–Mn alloy during crystallization at different cooling rates</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>Логинова</surname><given-names>И. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Loginova</surname><given-names>I. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, мл. науч. сотрудник кафедры термообработки и физики металлов</p><p>620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Junior research scientist, Heat treatment and metal physics department</p><p>620002, Russia, Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">i.s.loginova@urfu.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>Сазера</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sazerat</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент кафедры металловедения цветных металлов; </p><p>19991, г. Москва, Ленинский пр-т, 4</p><p>81000, France, Allée des sciences</p></bio><bio xml:lang="en"><p>Student, Department of metallurgy of non-ferrous metals</p><p>119991, Russia, Moscow, Leninskii pr., 4</p><p>81000, France, Allée des sciences</p></bio><email xlink:type="simple">m1911705@edu.misis.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>Попов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Popov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, вед. инженер, мл. научный сотрудник, доцент кафедры термообработки и физики металлов</p><p>620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Lead engineer, Junior research scientist, Senior lecturer, Heat treatment and metal physics department</p><p>620002, Russia, Ekaterinburg, Mira str., 19</p></bio><email xlink:type="simple">n.a.popov@urfu.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>Поздняков</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pozdniakov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доцент кафедры металловедения цветных металлов</p><p>19991, г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Senior lecturer, Department of metallurgy of non-ferrous metals</p><p>119991, Russia, Moscow, Leninskii pr., 4</p></bio><email xlink:type="simple">pozdniakov@misis.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>Солонин</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Solonin</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, зав. кафедрой металловедения цветных металлов</p><p>19991, г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Head of the Department of metallurgy of non-ferrous metals</p><p>119991, Russia, Moscow, Leninskii pr., 4</p></bio><email xlink:type="simple">solonin@misis.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет (УрФУ) имени первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University (UrFU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет (НИТУ) «МИСиС»; Institut Mines-Télécom (IMT) Mines Albi</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology (NUST) «MISIS»; Institut Mines-Télécom (IMT) Mines Albi</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><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>16</day><month>12</month><year>2020</year></pub-date><volume>0</volume><issue>6</issue><fpage>76</fpage><lpage>86</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Логинова И.С., Сазера М.В., Попов Н.А., Поздняков А.В., Солонин А.Н., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Логинова И.С., Сазера М.В., Попов Н.А., Поздняков А.В., Солонин А.Н.</copyright-holder><copyright-holder xml:lang="en">Loginova I.S., Sazerat M.V., Popov N.A., Pozdniakov A.V., Solonin A.N.</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/1204">https://cvmet.misis.ru/jour/article/view/1204</self-uri><abstract><p>Исследованы особенности формирования микроструктуры сплава Al–2,5%Fe–1,5%Mn в зависимости от скорости охлаждения при литье и в процессе лазерного плавления. Анализ микроструктуры в литом состоянии показал, что с повышением скорости охлаждения при кристаллизации от 0,5 до 940 К/с первичная кристаллизация фазы Al6(Mn,Fe) практически полностью подавляется, увеличивается объем неравновесной эвтектики до 43 %. Микроструктура сплава Al–2,5%Fe–1,5%Mn после лазерного плавления характеризуется наличием кристаллов алюминиевой матрицы дендритного типа со средним размером ячейки 0,56 мкм, окруженных железомарганцовистой фазой эвтектического происхождения со средним размером пластин 0,28 мкм. Первичная кристаллизация фазы Al6(Mn,Fe) полностью подавлена. Формирование такой микроструктуры происходит при скоростях охлаждения от 1,1·104 до 2,5·104 К/с, что соответствует скоростям охлаждения, реализуемым в аддитивных технологиях. На границе между треком и основным металлом, а также на границе повторного переплава выявлены области, со- стоящие из первичных кристаллов фазы Al6(Mn,Fe), сформированных по механизму эпитаксиального роста. Чем меньше размер эвтектических пластин и дендритной ячейки, находящихся в эпитаксиальном слое, тем дисперснее первичные кристаллы в зоне переплава. Сплав Al–2,5%Fe–1,5%Mn после лазерного плавления имеет высокую твердость при комнатной температуре (93 HV) и хорошую термическую стабильность после нагрева до 300 °С (твердость незначительно снижается до 85 HV), а его расчетный предел текучести составляет 227 МПа. В совокупности с высокими показателями дисперсности формируемой микроструктуры, технологичности при лазерном плавлении, твердости при комнатной температуре и расчетного предела текучести сплав Al–2,5%Fe–1,5%Mn является перспективным для использования в аддитивных технологиях.</p></abstract><trans-abstract xml:lang="en"><p>The paper studies specific features of the Al–2.5%Fe–1.5%Mn alloy microstructure formation depending on the cooling rate during casting and laser melting. As-cast microstructure analysis showed that with an increase in the cooling rate during crystallization from 0.5 to 940 K/s, the primary crystallization of the Al6(Mn,Fe) phase is almost completely suppressed with the non-equilibrium eutectic volume increasing to 43 %. The Al–2.5%Fe–1.5%Mn alloy microstructure after laser melting features by the presence of dendritic-type aluminum matrix crystals with an average cell size of 0.56 μm surrounded by an iron-manganese phase of eutectic origin with an average plate size of 0.28 μm. The primary crystallization of the Al6(Mn,Fe) phase is completely suppressed. Such a microstructure is formed at cooling rates of 1.1·104 to 2.5·104 K/s, which corresponds to the cooling rates implemented in additive technologies. Regions consisting of Al6(Mn,Fe) phase primary crystals formed by the epitaxial growth mechanism were revealed at the boundary between the track and the base metal and at the remelting boundary. The smaller the eutectic plates and dendritic cell located in the epitaxial layer, the more disperse the primary crystals in the remelting zone. The Al–2.5%Fe–1.5%Mn alloy after laser melting has high hardness at room temperature (93 HV) and good thermal stability after heating up to 300 °C (hardness slightly decreases to 85 HV), and its calculated yield strength is 227 MPa. Combined with the ultra-fine microstructure formed, high processibility during laser melting, hardness at room temperature, and high calculated yield strength, Al–2.5%Fe–1.5%Mn is a promising alloy for use in additive technologies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплав системы Al–Fe–Mn</kwd><kwd>аддитивные технологии</kwd><kwd>скорость охлаждения</kwd><kwd>лазерное плавление</kwd><kwd>микроструктура</kwd><kwd>твердость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Al–Fe–Mn alloy</kwd><kwd>additive technologies</kwd><kwd>cooling rate</kwd><kwd>laser melting</kwd><kwd>microstructure</kwd><kwd>hardness</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Li R., Wang M., Yuan T., Song B., Chen C., Zhou K., Cao P. Selective laser melting of a novel Sc and Zr modified Al—6.2Mg alloy: Processing, microstructure, and properties. Powder Technol. 2017. Vol. 319. 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