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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2021-10-736-746</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2191</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>МАТЕРИАЛОВЕДЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Структура высокоэнтропийного сплава AlCoCrFeNi после деформации по схеме одноосного сжатия и термической обработки</article-title><trans-title-group xml:lang="en"><trans-title>Structure of AlCoCrFeNi high-entropy alloy after uniaxial compression and heat treatment</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5021-0098</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Иванов Иван Владимирович - младший научный сотрудник научно-исследовательской лаборатории физико-химических технологий и функциональных материалов.</p><p>630073, Новосибирск, пр. Карла Маркса, 20.</p></bio><bio xml:lang="en"><p>Ivan V. Ivanov - Junior Researcher of the Research Laboratory of Physical and Chemical Technologies and Functional Materials, Novosibirsk State Technical University.</p><p>20 K. Marksa Ave., Novosibirsk 630073.</p></bio><email xlink:type="simple">i.ivanov@corp.nstu.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/0000-0002-1114-6799</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Эмурлаев</surname><given-names>К. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Emurlaev</surname><given-names>K. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Эмурлаев Кемал Исметович - младший научный сотрудник научно-исследовательской лаборатории физико-химических технологий и функциональных материалов.</p><p>630073, Новосибирск, пр. Карла Маркса, 20.</p></bio><bio xml:lang="en"><p>Kemal I. Emurlaev - Junior Researcher of the Research Laboratory of Physical and Chemical Technologies and Functional Materials, Novosibirsk State Technical University.</p><p>20 K. Marksa Ave., Novosibirsk 630073.</p></bio><email xlink:type="simple">emurlaev@corp.nstu.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/0000-0002-1325-1533</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Руктуев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ruktuev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Руктуев Алексей Александрович – кандидат технических наук, старший научный сотрудник научно-исследовательской лаборатории физико-химических технологий и функциональных материалов.</p><p>630073, Новосибирск, пр. Карла Маркса, 20.</p></bio><bio xml:lang="en"><p>Aleksei A. Ruktuev - Cand. Sci (Eng.), Senior Researcher of the Research Laboratory of Physical and Chemical Technologies and Functional Materials, Novosibirsk State Technical University.</p><p>20 K. Marksa Ave., Novosibirsk 630073.</p></bio><email xlink:type="simple">ruktuev@corp.nstu.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/0000-0003-4757-424X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тюрин</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyurin</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюрин Андрей Геннадьевич – кандидат технических наук, декан механико-технологического факультета.</p><p>630073, Новосибирск, пр. Карла Маркса, 20.</p></bio><bio xml:lang="en"><p>Andrei G. Tyurin - Cand. Sci (Eng.), Dean of the Faculty of Mechanics and Technology, Novosibirsk State Technical University.</p><p>20 K. Marksa Ave., Novosibirsk 630073.</p></bio><email xlink:type="simple">a.tyurin@corp.nstu.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/0000-0003-2871-0269</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Батаев</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bataev</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Батаев Иван Анатольевич – доктор технических наук, заведующий научно-исследовательской лаборатории физико-химических технологий и функциональных материалов.</p><p>630073, Новосибирск, пр. Карла Маркса, 20.</p></bio><bio xml:lang="en"><p>Ivan A. Bataev - Dr. Sci. (Eng.), Head of the Research Laboratory of Physical and Chemical Technologies and Functional Materials, Novosibirsk State Technical University.</p><p>20 K. Marksa Ave., Novosibirsk 630073.</p></bio><email xlink:type="simple">i.bataev@corp.nstu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Новосибирский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Novosibirsk State Technical 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>24</day><month>11</month><year>2021</year></pub-date><volume>64</volume><issue>10</issue><fpage>736</fpage><lpage>746</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванов И.В., Эмурлаев К.И., Руктуев А.А., Тюрин А.Г., Батаев И.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Иванов И.В., Эмурлаев К.И., Руктуев А.А., Тюрин А.Г., Батаев И.А.</copyright-holder><copyright-holder xml:lang="en">Ivanov I.V., Emurlaev K.I., Ruktuev A.A., Tyurin A.G., Bataev I.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://fermet.misis.ru/jour/article/view/2191">https://fermet.misis.ru/jour/article/view/2191</self-uri><abstract><p>Изучены структура и свойства высокоэнтропийного сплава AlCoCrFeNi после литья, деформации в холодном состоянии и термической обработки. Слитки исследуемых сплавов получены методом аргонодугового переплава. С целью обеспечения гомогенного химического состава по объему слитка осуществлялся его восьмикратный переплав. Для проведения механических испытаний из слитков электроискровым методом вырезали цилиндрические образцы диаметром 5 мм и высотой 8 мм. В дальнейшем образцы подвергались одноосному сжатию на 5, 11 и 23 %. В ходе испытаний регистрировали кривые сжатия, на основании которых рассчитывали предел пропорциональности анализируемых сплавов. Согласно полученным результатам для сплава AlCoCrFeNi после литья характерно высокое (1262 ± 68 МПа) значение предела пропорциональности. Высокотемпературный отжиг и термические исследования проводили с использованием термогравиметрического анализатора. Термические исследования проводили в циклическом режиме (3 цикла, включающих нагрев до 1200 °C со скоростью 20 °C/мин) и охлаждение со скоростью 20 °C/мин). Высокотемпературный отжиг проводили при температуре 1200 °C в течение 5 ч. Выявлено, что высокотемпературный отжиг литых сплавов способствует гомогенизации материала и устраняет дендритные построения. Для исследуемого сплава характерна ограниченная пластичность, а межзеренные границы являются эффективными барьерами, препятствующими распространению трещин. Проведенные исследования свидетельствуют о том, что пластическая деформация оказывает существенное влияние на характер развития релаксационных процессов при термической обработке деформированного материала. Повышение степени деформации материала сопровождается ускорением процессов залечивания дефектов кристаллического строения.</p></abstract><trans-abstract xml:lang="en"><p>In this study, we discuss the structure and properties of high-entropy AlCoCrFeNi alloy after casting, cold deformation, and heat treatment. Ingots of the investigated alloys were obtained by arc melting method in argon atmosphere. In order to ensure a homogeneous chemical composition, ingots were remelted several times. Cylindrical samples of 5 mm in diameter and 8 mm in height were cut from ingots by electrospark method for mechanical tests. Subsequently, samples were subjected to uniaxial compression by 5, 11, and 23 %. During the tests, compression curves were recorded, and limit of proportionality of the analyzed alloys was calculated. High-temperature annealing and thermal studies were performed using thermogravimetric analyzer. Thermal studies were carried out in a cyclic mode (3 cycles, including heating up to 1200 °C at a rate of 20 °C/min and cooling at a rate of 20 °C/min). High-temperature annealing was carried out at a temperature of 1200 °C for 5 hours. Such annealing of cast alloys promotes material homogenization and eliminates dendritic structure. The alloy presents limited plasticity. Grain boundaries are effective barriers preventing crack propagation. The studies indicate that plastic deformation has a significant effect on development of relaxation processes during subsequent heat treatment. An increase in strain during the compression leads to a higher rate of healing processes of defects in crystal structure.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэнтропийные сплавы</kwd><kwd>пластическая деформация</kwd><kwd>отжиг</kwd><kwd>залечивание дефектов</kwd><kwd>термический анализ</kwd><kwd>микротвердость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>high-entropy alloys</kwd><kwd>plastic deformation</kwd><kwd>annealing</kwd><kwd>defect healing</kwd><kwd>thermal analysis</kwd><kwd>microhardness</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при финансовой поддержке Российского Научного Фонда в рамках проекта № 20-73-10215 «In-situ исследование эволюции дислокационной структуры пластически деформированных высокоэнтропийных сплавов в условиях действия высоких давлений и температур с применением синхротронного излучения».</funding-statement><funding-statement xml:lang="en">The work was supported within the Russian Science Foundation research project No. 20-73-10215 “In-situ study of the evolution of dislocation structure of plastically deformed high-entropy alloys under high-pressures and temperatures using synchrotron radiation”.</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">Dai J.H., Li W., Song Y., Vitos L. 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