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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">10.17073/0021-3438-2023-5-34-46</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1528</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>Структура и свойства литейного магниевого сплава GEWZ522K системы Mg–Gd–Nd–Y–Zn–Zr</article-title><trans-title-group xml:lang="en"><trans-title>Microstructure and properties of the GEWZ522K casting magnesium alloy based on the Mg–Gd–Nd–Y–Zn–Zr system</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8376-0480</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колтыгин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Koltygin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Вадимович Колтыгин – к.т.н., доцент кафедрылитейных технологий и художественной обработкиматериалов (ЛТиХОМ)</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Andrei V. Koltygin – Cand. Sci. (Eng.), Assistant Prof., Department of Foundry Technologies and Material Art Working (FT&amp;MAW)</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">misistlp@mail.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/0009-0001-1934-0107</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павлов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavlov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Валерьевич Павлов – аспирант кафедрыЛТиХОМ</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Aleksandr V. Pavlov – Postgraduate Student, Departmentof FT&amp;MAW</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">pavloveone@mail.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/0000-0003-3214-1935</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баженов</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazhenov</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Евгеньевич Баженов – к.т.н., доцент кафедры ЛТиХОМ</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Viacheslav E. Bazhenov – Cand. Sci. (Eng.), Assistant Prof.,Department of FT&amp;MAW</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">V.E.Bagenov@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-5881-5135</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гнатюк</surname><given-names>О. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Gnatyuk</surname><given-names>O. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Олеся Дмитриевна Гнатюк – студент кафедры ЛТиХОМ</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Olesya D. Gnatyuk – Student, Department of FT&amp;MAW</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">olessya1234@mail.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/0000-0002-0465-7865</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баранов</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Baranov</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иван Ильич Баранов – студент кафедры ЛТиХОМ</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Ivan I. Baranov – Student, Department of FT&amp;MAW</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">baranov.wania@yandex.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/0000-0003-3607-8144</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белов</surname><given-names>В. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Belov</surname><given-names>V. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Дмитриевич Белов – д.т.н., заведующий кафедрой ЛТиХОМ</p><p>119049, г. Москва, Ленинский пр-т, 4, стр. 1</p></bio><bio xml:lang="en"><p>Vladimir D. Belov – Dr. Sci. (Eng.), Head of the Department of FT&amp;MAW</p><p>4 build 1 Leninskiy Prosp., Moscow, 119049</p></bio><email xlink:type="simple">vdbelov@mail.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>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>10</month><year>2023</year></pub-date><volume>29</volume><issue>5</issue><fpage>34</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Колтыгин А.В., Павлов А.В., Баженов В.Е., Гнатюк О.Д., Баранов И.И., Белов В.Д., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Колтыгин А.В., Павлов А.В., Баженов В.Е., Гнатюк О.Д., Баранов И.И., Белов В.Д.</copyright-holder><copyright-holder xml:lang="en">Koltygin A.V., Pavlov A.V., Bazhenov V.E., Gnatyuk O.D., Baranov I.I., Belov V.D.</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/1528">https://cvmet.misis.ru/jour/article/view/1528</self-uri><abstract><p>Рассмотрены кристаллизация и фазовый состав литейного сплава (мас.%) Mg–4,8Gd–2,1Nd–1,6Y–0,4Zn–0,6Zr (GEWZ522K). Показано, что в литом состоянии структура сплава состоит из первичных частиц циркония, дендритов магниевого твердого раствора αMg и эвтектических интерметаллических фаз, находящихся между их ветвями. В результате отжига при t = 530±5 °C сплав переходит в однофазное состояние и после закалки может быть значительно упрочнен в результате искусственного старения. Было предложено проводить старение сплава при t = 250 °C длительностью 8–10 ч или при t = 200 °C в течение 15–18 ч. При этом достигается максимальное упрочнение сплава, однако лучшие механические свойства были получены для сплава, состаренного при t = 250 °C. Независимо от режима старения, предел прочности на растяжение (σв) образцов превосходит 300 МПа, что гораздо выше показателей промышленных литейных сплавов по ГОСТ 2856-79. Рассчитанная скорость коррозии для сплава GEWZ522K равна 7,5±0,4 мм/год, что несколько больше, чем для менее легированного промышленного сплава МЛ10 (порядка 2,5 мм/год), испытанного в аналогичных условиях. Сплав был также испытан на сопротивление к возгоранию в контакте с воздухом. Установлено, что при непрерывном поступлении воздуха к поверхности образца очаги возгорания появляются при t = 625 °C вследствие разрушения оксидной плены, когда сплав практически полностью расплавляется. Таким образом, сплав GEWZ522K может быть использован в качестве высокопрочного литейного сплава. Однако при эксплуатации литых деталей из него необходимо уделять пристальное внимание защите их поверхности от коррозионного воздействия. </p></abstract><trans-abstract xml:lang="en"><p>The article discusses the solidification and phase composition of the (wt.%) Mg–4.8Gd–2.1Nd–1.6Y–0.4Zn–0.6Zr (GEWZ522K) casting alloy. It is demonstrated that in the as-cast state, the alloy structure comprises primary zirconium particles, dendrites of the magnesium solid solution (αMg), and eutectic intermetallic phases located between dendritic branches. Following solution heat treatment at t = 530±5 °C, the alloy transitions into a single-phase state and can be significantly strengthened through artificial aging after quenching. It is recommended to apply alloy aging at t = 250 °C for 8–10 h or at t = 200 °C for 15–18 h. This approach leads to the maximum strengthening of the alloy, with the best mechanical properties achieved for the alloy aged at t = 250 °C. Regardless of the aging method used, the ultimate tensile strength (UTS) of the samples surpasses 300 MPa, which significantly exceeds that of commercial casting alloys according to GOST 2856-79. The measured corrosion rate for the GEWZ522K alloy is 7.5±0.4 mm/year, that slightly higher than that for the less alloyed commercial alloy ML10 (approximately 2.5 mm/year) tested under similar conditions. Furthermore, the alloy was subjected to tests for ignition resistance when in contact with air. It was observed that with continuous airflow over the specimen’s surface, ignition centers appear at t = 625 °C due to the breakdown of the oxide film, causing the alloy to nearly completely melt. Therefore, the GEWZ522K alloy can be employed as a high-strength casting alloy. However, during the operation of cast parts, particular attention must be paid to safeguarding the surface of these parts against corrosion. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>магниевый сплав</kwd><kwd>литье</kwd><kwd>Mg–Gd–Nd–Y–Zn–Zr</kwd><kwd>высокопрочный</kwd><kwd>коррозия магния</kwd><kwd>возгорание магния</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnesium alloy</kwd><kwd>casting</kwd><kwd>Mg–Gd–Nd–Y–Zn–Zr</kwd><kwd>high strength alloy</kwd><kwd>magnesium corrosion</kwd><kwd>magnesium ignition</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">Weiler J.P. A review of magnesium die-castings for closure applications. Journal of Magnesium and Alloys. 2019;7(2):297—304. https://doi.org/10.1016/j.jma.2019.02.005</mixed-citation><mixed-citation xml:lang="en">Weiler J.P. A review of magnesium die-castings for closure applications. 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