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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Frontier Materials &amp; Technologies</journal-id><journal-title-group><journal-title xml:lang="en">Frontier Materials &amp; Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Frontier Materials &amp; Technologies</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4039</issn><issn publication-format="electronic">2782-6074</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1023</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2025-1-71-2</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Structure and mechanical properties of high-entropy alloys of the CoCrZrMnNi system with different Zr and Mn contents produced by vacuum-induction melting</article-title><trans-title-group xml:lang="ru"><trans-title>Структура и механические свойства высокоэнтропийных сплавов системы CoCrZrMnNi, полученных вакуумно-индукционной плавкой, с разным содержанием Zr и Mn</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4809-8660</contrib-id><name-alternatives><name xml:lang="en"><surname>Konovalov</surname><given-names>Sergey V.</given-names></name><name xml:lang="ru"><surname>Коновалов</surname><given-names>Сергей Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="ru"><p>доктор технических наук, профессор, проректор по научной и инновационной деятельности</p></bio><email>konovalov@sibsiu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1532-9226</contrib-id><name-alternatives><name xml:lang="en"><surname>Drobyshev</surname><given-names>Vladislav K.</given-names></name><name xml:lang="ru"><surname>Дробышев</surname><given-names>Владислав Константинович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student of Chair of Metal Forming and Materials Science of EVRAZ ZSMK, researcher of the Laboratory of Electron Microscopy and Image Processing</p></bio><bio xml:lang="ru"><p>аспирант кафедры обработки металлов давлением и материаловедения ЕВРАЗ ЗСМК, научный сотрудник лаборатории электронной микроскопии и обработки изображений</p></bio><email>drobyshev_v.k@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1631-9644</contrib-id><name-alternatives><name xml:lang="en"><surname>Panchenko</surname><given-names>Irina A.</given-names></name><name xml:lang="ru"><surname>Панченко</surname><given-names>Ирина Алексеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), assistant professor of Chair of Quality Management and Innovation, Head of the Laboratory of Electron Microscopy and Image Processing</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры менеджмента качества и инноваций, заведующий лабораторией электронной микроскопии и обработки изображений</p></bio><email>panchenko.sibsiu@yandex.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3444-115X</contrib-id><name-alternatives><name xml:lang="en"><surname>Li</surname><given-names>Haixin</given-names></name><name xml:lang="ru"><surname>Ли</surname><given-names>Хайсинь</given-names></name></name-alternatives><address><country country="CN">China</country></address><bio xml:lang="en"><p>PhD, associate professor of Yantai Research Institute</p></bio><bio xml:lang="ru"><p>кандидат наук, доцент Научно-исследовательского института в Яньтае</p></bio><email>lihaixin@hrbeu.edu.cn</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Siberian State Industrial University</institution></aff><aff><institution xml:lang="ru">Сибирский государственный индустриальный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Harbin Engineering University</institution></aff><aff><institution xml:lang="ru">Харбинский инженерный университет</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">654007, Россия, г. Новокузнецк, ул. Кирова, 42</institution></aff><aff><institution xml:lang="ru">Сибирский государственный индустриальный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-03-31" publication-format="electronic"><day>31</day><month>03</month><year>2025</year></pub-date><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>21</fpage><lpage>34</lpage><history><date date-type="received" iso-8601-date="2025-03-31"><day>31</day><month>03</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-03-31"><day>31</day><month>03</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Konovalov S.V., Drobyshev V.K., Panchenko I.A., Li H.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Коновалов С.В., Дробышев В.К., Панченко И.А., Ли Х.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Konovalov S.V., Drobyshev V.K., Panchenko I.A., Li H.</copyright-holder><copyright-holder xml:lang="ru">Коновалов С.В., Дробышев В.К., Панченко И.А., Ли Х.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/1023">https://vektornaukitech.ru/jour/article/view/1023</self-uri><abstract xml:lang="en"><p>The mechanical properties and microstructure of high-entropy alloys (HEA) of the CoCrZrMnNi system produced by vacuum-induction melting are studied depending on the change in the Zr and Mn content. The effect of the Zr and Mn percentage on the microstructure and mechanical properties (Young’s modulus, nanohardness, microhardness) of the high-entropy alloys of the CoCrZrMnNi system is estimated. The relationship between varying the percentage of Zr and Mn and changing the grain size and mechanical properties of high-entropy alloys is studied. The structure, chemical composition and distribution of the intensity of characteristic X-ray radiation of atoms are studied using scanning electron microscopy. The study by scanning electron microscopy methods has demonstrated that in CoCrZrMnNi alloys, with an increase in the zirconium content and a decrease in the manganese content closer to the equiatomic composition, the material structure became more homogeneous. Changing the percentage of zirconium from 8 to 28 at. % contributed to the grain size reduction from 30 to 5 μm and a more uniform elemental distribution. The Сo<sub>19.8</sub>Cr<sub>17.5</sub>Zr<sub>15.3</sub>Mn<sub>27.7</sub>Ni<sub>19.7</sub> alloy demonstrated the highest nanohardness (10 GPa) and Young’s modulus (161 GPa) during instrumental indentation with an indenter load of 50 mN. The Сo<sub>20.4</sub>Cr<sub>18.0</sub>Zr<sub>7.9</sub>Mn<sub>33.3</sub>Ni<sub>20.3</sub> alloy has the lowest nanohardness, Young’s modulus, and microhardness among other alloys, which may be related to the coarse-grained structure with a grain size of up to 30 μm. As the indenter load increased to 5 N, the microhardness of the Сo<sub>19.8</sub>Cr<sub>17.5</sub>Zr<sub>15.3</sub>Mn<sub>27.7</sub>Ni<sub>19.7</sub> alloy decreased compared to the Сo<sub>18.7</sub>Cr<sub>16.5</sub>Zr<sub>28.9</sub>Mn<sub>17.4</sub>Ni<sub>18.6</sub> alloy, which may indicate more universal mechanical properties of alloys with equiatomic zirconium content.</p></abstract><trans-abstract xml:lang="ru"><p>Изучены механические свойства и микроструктура высокоэнтропийных сплавов (ВЭС) системы CoCrZrMnNi, полученных вакуумно-индукционной плавкой, в зависимости от изменения содержания Zr и Mn. Оценивается влияние процентного содержания Zr и Mn на микроструктуру и механические свойства (модуль Юнга, нанотвердость, микротвердость) ВЭС системы CoCrZrMnNi. Изучена связь варьирования процентного содержания Zr и Mn с изменением размера зерен и механических свойств ВЭС. Исследования структуры, химического состава и распределения интенсивности характеристического рентгеновского излучения атомов выполнены c использованием сканирующей электронной микроскопии. Методами сканирующей электронной микроскопии продемонстрировано, что в сплавах CoCrZrMnNi при увеличении содержания циркония и уменьшении содержания марганца ближе к эквиатомному составу структура материала становилась более однородной. Изменение процентного содержания циркония с 8 до 28 ат. % способствовало уменьшению зерна с 30 до 5 мкм и более однородному элементному распределению. Сплав Сo<sub>19,8</sub>Cr<sub>17,5</sub>Zr<sub>15,3</sub>Mn<sub>27,7</sub>Ni<sub>19,7</sub> в ходе инструментального индентирования с нагрузкой на индентор 50 мН продемонстрировал наибольшее значение нанотвердости (10 ГПа) и модуля Юнга (161 ГПа). Сплав Сo<sub>20,4</sub>Cr<sub>18,0</sub>Zr<sub>7,9</sub>Mn<sub>33,3</sub>Ni<sub>20,3</sub> обладает наименьшими параметрами нанотвердости, модуля Юнга, микротвердости среди других сплавов, что может быть связано с крупнозернистой структурой с размером зерна до 30 мкм. По мере увеличения нагрузки на индентор до 5 Н микротвердость сплава Сo<sub>19,8</sub>Cr<sub>17,5</sub>Zr<sub>15,3</sub>Mn<sub>27,7</sub>Ni<sub>19,7</sub> снижалась по сравнению со сплавом Сo<sub>18,7</sub>Cr<sub>16,5</sub>Zr<sub>28,9</sub>Mn<sub>17,4</sub>Ni<sub>18,6</sub>, что может указывать на более универсальные механические свойства сплавов с эквиатомным содержанием циркония.</p></trans-abstract><kwd-group xml:lang="en"><kwd>structure</kwd><kwd>mechanical properties</kwd><kwd>high-entropy alloy</kwd><kwd>vacuum-induction melting</kwd><kwd>scanning electron microscopy</kwd><kwd>Young’s modulus</kwd><kwd>nanohardness</kwd><kwd>microhardness</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>структура</kwd><kwd>механические свойства</kwd><kwd>высокоэнтропийный сплав</kwd><kwd>вакуумная индукционная плавка</kwd><kwd>сканирующая электронная микроскопия</kwd><kwd>модуль Юнга</kwd><kwd>нанотвердость</kwd><kwd>микротвердость</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда</institution></institution-wrap><institution-wrap><institution xml:lang="en">The study was supported by the grant of the Russian Science Foundation</institution></institution-wrap></funding-source><award-id>23-49-00015</award-id></award-group><funding-statement xml:lang="en">The study was supported by the grant of the Russian Science Foundation No. 23-49-00015, https://rscf.ru/project/23-49-00015/.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23-49-00015, https://rscf.ru/project/23-49-00015/.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Pandey V., Seetharam R., Chelladurai H. 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