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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">10.17073/0021-3438-2020-1-48-58</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1068</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>Новый высокопрочный литейный алюминиевый сплав на основе системы Al–Zn–Mg–Ca–Fe, не требующий термообработки</article-title><trans-title-group xml:lang="en"><trans-title>New high-strength casting aluminum alloy based on the Al–Zn–Mg–Ca–Fe system without requirement for heat treatment</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>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>Национальный исследовательский технологический университет «МИСиС»</p><p>119049, г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Postgraduate student, engineer of the Department of metal forming</p><p>119049, Russia, Moscow, Leninskii pr., 4</p></bio><email xlink:type="simple">pa.shurkin@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>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>Доктор технических наук, профессор, главный научный сотрудник кафедры обработки металлов давлением</p><p>г. Москва, </p><p> </p></bio><bio xml:lang="en"><p>Dr. Sci. (Tech.), prof., chief researcher of the Department of metal forming </p><p>Moscow</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>Мусин</surname><given-names>А. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Musin</surname><given-names>A. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистрант, инженер кафедры обработки металлов давлением</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Graduate student, engineer of the Department of metal forming </p><p>Moscow</p></bio><email xlink:type="simple">mu7ina@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>Аксенов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Aksenov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор технических наук, профессор кафедры обработки металлов давлением</p><p>г. Москва</p></bio><bio xml:lang="en"><p>Dr. Sci. (Tech.), prof. of the Department of metal forming </p><p>Moscow</p></bio><email xlink:type="simple">aksenov@misis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology «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>19</day><month>02</month><year>2020</year></pub-date><volume>0</volume><issue>1</issue><fpage>48</fpage><lpage>58</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шуркин П.К., Белов Н.А., Мусин А.Ф., Аксенов А.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Шуркин П.К., Белов Н.А., Мусин А.Ф., Аксенов А.А.</copyright-holder><copyright-holder xml:lang="en">Shurkin P.K., Belov N.A., Musin A.F., Aksenov A.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/1068">https://cvmet.misis.ru/jour/article/view/1068</self-uri><abstract><p>На основании изучения структуры, технологических и механических свойств обоснованы состав и перспективы применения литейного высокопрочного алюминиевого сплава системы Al–Zn–Mg–Ca–Fe без использования термической обработки. В качестве объектов исследования были получены сплавы на основе базовой композиции Al–5,5%Zn–1,5%Mg (мас.%), совместно и раздельно легированные 0,5–1,0 % Сa и 0,5 % Fe. Объектами сравнения выступали стандартные литейные сплавы (согласно ГОСТ 1583-93): АК12М2, АМг6лч, АМ4,5Кд. Способом заливки карандашных проб был проведен тест на склонность к формированию горячих трещин вследствие затрудненной усадки. Показано, что раздельное легирование кальцием и железом не способствует улучшению трещиностойкости и отрицательно сказывается на механических свойствах. Совместное введение 1 % Са и 0,5 % Fe позволяет повысить показатель горячеломкости до уровня свойств сплава АМг6лч. Данный эффект обусловлен образованием кальцийсодержащих фаз эвтектического происхождения и формированием благоприятной зеренной структуры, в которой отсутствуют столбчатые кристаллы. Железо в структуре сплава связано в компактные частицы фазы Al10CaFe2, что является следствием неравновесной кристаллизации, реализуемой при литье в кокиль. Формирование этой фазы позволило снизить количество цинка в фазе (Al, Zn)4Ca и в значительной мере сохранить состав твердого раствора (Al), о чем свидетельствуют схожие значения твердости базового сплава Al–5,5%Zn–1,5%Mg и сплава Al–5,5%Zn–1,5%Mg–1%Ca–0,5%Fe, а также превосходство этих значений перед показателями твердости сплавов, которые отдельно легированы кальцием и железом. Также твердость перспективного сплава в литом состоянии более чем на 20 HV превышает твердость марочных литейных сплавов в аналогичном состоянии. Новый сплав в литом состоянии показал конкурентоспособные механические свойства на растяжение: σв ~ 310 МПа, σ0,2 ~ 210 МПа, δ ~ 4 %.</p></abstract><trans-abstract xml:lang="en"><p>The paper substantiates the composition and prospects of using high strength Al–Zn–Mg–Ca–Fe casting aluminum alloy without heat treatment based on the study on the structure, technological and mechanical properties. Alloys of the base composition Al–5.5%Zn–1.5%Mg (wt.%) jointly and separately doped with 0.5–1.0 % Ca and 0.5 % Fe were obtained as the objects of research. Standard casting alloys according to GOST 1583-93: AK12M2, AMg6lch, AM4,5Kd were the objects of comparison. A hot tensile test using a cast test bar was conducted to check the tendency to form hot cracks due to hindered contraction. It was shown that separate alloying with calcium and iron does not contribute to the improvement of crack resistance and adversely affects mechanical properties. Combined alloying with 1 % Ca and 0.5 % Fe improves the hot tearing resistance to the level of the AMg6lch alloy properties. This effect is due to calcium-containing phases of eutectic origin formed and a favorable grain structure created that is free from columnar grains. Iron in the alloy structure is bound in compact Al10CaFe2 phase particles as a result of the non-equilibrium crystallization during permanent mold casting. The formation of this phase allowed to reduce the amount of zinc in the (Al, Zn)4Ca phase and mostly retain the (Al) solid solution composition as evidenced by similar hardness values of the Al–5.5%Zn–1.5%Mg base alloy and Al–5.5%Zn–1.5%Mg–1%Ca–0.5%Fe alloy, and the superiority of the values over the hardness of alloys separately alloyed with calcium and iron. Also the cast hardness of the promising alloy more than 20 HV higher than the cast hardness of commercial cast alloys. The new alloy in the as-cast condition exhibited competitive mechanical tensile properties: UTS ~ 310 MPa, YS ~ 210 MPa, El ~ 4 %.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>литейные алюминиевые сплавы</kwd><kwd>высокопрочные алюминиевые сплавы</kwd><kwd>система Al–Zn–Mg</kwd><kwd>кальций</kwd><kwd>железо</kwd><kwd>микроструктура</kwd><kwd>фазовый состав</kwd><kwd>механические свойства</kwd><kwd>горячеломкость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>casting aluminum alloys</kwd><kwd>high-strength aluminum alloys</kwd><kwd>Al–Zn–Mg system</kwd><kwd>calcium</kwd><kwd>iron</kwd><kwd>microstructure</kwd><kwd>phase composition</kwd><kwd>mechanical properties</kwd><kwd>hot tearing resistance</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">Glazoff M., Khvan A., Zolotorevsky V., Belov N., Dinsdale A. 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