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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">10.17073/0021-3438-2016-5-61-68</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-378</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>ВЛИЯНИЕ СКАНДИЯ НА ФАЗОВЫЙ СОСТАВ И УПРОЧНЕНИЕ ЛИТЕЙНЫХ АЛЮМИНИЕВЫХ СПЛАВОВ СИСТЕМЫ Al–Ca–Si</article-title><trans-title-group xml:lang="en"><trans-title>Effect of scandium on phase composition and hardening of Al–Ca–Si system casting aluminum alloys</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>Белов</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Belov</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, профессор кафедры литейных технологий и художественной обработки материалов (ЛТиХОМ) НИТУ «МИСиС», зам. директора Инжинирингового центра «Литейные технологии и материалы» (ИЦ «ЛТМ») НИТУ «МИСиС» (119049, г. Москва, Ленинский пр-т, 4).</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), professor of the Department of foundry technologies and material art working (FT&amp;MAW), deputy director of the Engineering Centre «Foundry technologies and materials», National University of Science and Technology «MISIS» (NUST «MISIS»)</p></bio><email xlink:type="simple">nikolay-belov@yandex.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>Наумова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доцент кафедры материаловедения МГТУ им. Н.Э. Баумана</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), associate prof., Department of materials, Bauman Moscow State Technical University</p></bio><email xlink:type="simple">jan73@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>Дорошенко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Doroshenko</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистрант кафедры ЛТиХОМ, инженер ИЦ «ЛТМ» НИТУ «МИСиС».</p></bio><bio xml:lang="en"><p>master's degree student, Department of FT&amp;MAW, NUST «MISIS», engineer of the Engineering Centre «Foundry technologies and materials», NUST «MISIS».</p></bio><email xlink:type="simple">v.doroshenko@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>Базлова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazlova</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доцент кафедры ЛТиХОМ НИТУ «МИСиС»</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), associate prof., Department of FT&amp;MAW, NUST «MISIS».</p></bio><email xlink:type="simple">tbazlova@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Инжиниринговый центр «Литейные технологии и материалы» (ИЦ «ЛТМ») НИТУ «МИСиС» (119049, г. Москва, Ленинский пр-т, 4).</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology «MISIS» (NUST «MISIS») (119049, Russia, Moscow, Leninskii pr., 4).</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>МГТУ им. Н.Э. Баумана (105005, г. Москва, 2-я Бауманская ул., д. 5, стр. 1).</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bauman Moscow State Technical University (105005, Russia, Moscow, 2-nd Bauman str., 5/1).</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС», г. Москва (119049, г. Москва, Ленинский пр-т, 4).</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology «MISIS» (NUST «MISIS») (119049, Russia, Moscow, Leninskii pr., 4).</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>03</day><month>11</month><year>2016</year></pub-date><volume>0</volume><issue>5</issue><fpage>61</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Белов Н.А., Наумова Е.А., Дорошенко В.В., Базлова Т.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Белов Н.А., Наумова Е.А., Дорошенко В.В., Базлова Т.А.</copyright-holder><copyright-holder xml:lang="en">Belov N.A., Naumova E.A., Doroshenko V.V., Bazlova T.A.</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/378">https://cvmet.misis.ru/jour/article/view/378</self-uri><abstract><p>С использованием расчетных (Thermo-Calc) и экспериментальных (оптическая и электронная сканирующая микроскопия, микрорентгеноспектральный анализ) методов изучен фазовый состав системы Al–Ca–Si–Sc в области алюминиевых сплавов. Исследовано влияние отжига в диапазоне до 550 °C на структуру и твердость сплавов, содержащих 0,3 % Sc. Показано, что максимум упрочнения, обусловленного выделением наночастиц фазы Al3Sc (L12), достигается после отжига при температурах 300–350 °C в сплавах, попадающих в фазовую область (Al) + Al4Ca + Al2Si2Ca ((Al) – твердый раствор на основе алюминия). В сплавах данной области скандий полностью входит в состав (Al), а концентрация кремния в нем минимальна. С другой стороны, в сплавах из фазовой области (Al) + (Si) + Al2Si2Ca упрочнение практически отсутствует. Обоснована принципиальная возможность создания литейных сплавов на базе эвтектики (Al) + Al4Ca + Al2Si2Ca, упрочняемых без закалки.</p></abstract><trans-abstract xml:lang="en"><p>The paper uses calculation (Thermo-Calc) and experimental (optical and electron scanning microscopy, electron microprobe analysis) methods and studies phase composition of the system Al–Ca–Si–Sc in the region of aluminum alloys. It studies the effect of annealing in the range of up to 550 °C on the structure and hardness of alloys containing 0,3 % of Sc. The study demonstrates that maximum hardening due to release of Al3Sc (L12) phase nanoparticles is achieved after annealing at temperatures of 300–350 °C in alloys falling within the phase region (Al) + Al4Ca + Al2Si2Ca ((Al) – solid aluminum-based solution). Scandium enters the (Al) composition in alloys of this region in full, and silicon concentration in such composition is minimal. On the other hand, hardening effect in alloys of the (Al) + (Si) + Al2Si2Ca phase region is near-zero. The study substantiates fundamental possibility of creating (Al) + Al4Ca + Al2Si2Ca eutectic-based cast alloys, which can be hardened without quenching.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>система Al–Ca–Si–Sc</kwd><kwd>скандий</kwd><kwd>МРСА (РСМА)</kwd><kwd>фазовый состав</kwd><kwd>кальций</kwd><kwd>эвтектика</kwd><kwd>наночастицы Al3Sc</kwd><kwd>упрочнение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Al–Ca–Si–Sc system</kwd><kwd>scandium</kwd><kwd>EMPA</kwd><kwd>phase composition</kwd><kwd>calcium</kwd><kwd>eutectic</kwd><kwd>Al3Sc nanoparticles</kwd><kwd>hardening</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">Toropova L.S., Eskin D.G., Kharakterova M.L., Dobatkina T.V. Advanced aluminum alloys containing scandium: structure and properties. 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