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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">Doklady Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Doklady Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Российской академии наук. Химия, науки о материалах</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2686-9535</issn><issn publication-format="electronic">3034-5111</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">651922</article-id><article-id pub-id-type="doi">10.31857/S2686953524010073</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>PHYSICAL CHEMISTRY</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ФИЗИЧЕСКАЯ ХИМИЯ</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">High-entropy carbide (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C mechanical properties prediction with the use of machine learning potential</article-title><trans-title-group xml:lang="ru"><trans-title>Прогнозирование механических свойств высокоэнтропийного карбида (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C с применением потенциала машинного обучения</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pikalova</surname><given-names>N. S.</given-names></name><name xml:lang="ru"><surname>Пикалова</surname><given-names>Н. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>rempel.imet@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Balyakin</surname><given-names>I. A.</given-names></name><name xml:lang="ru"><surname>Балякин</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>rempel.imet@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yuryev</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Юрьев</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>rempel.imet@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rempel</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Ремпель</surname><given-names>А. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Academician of the RAS</p></bio><bio xml:lang="ru"><p>академик</p></bio><email>rempel.imet@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт металлургии Уральского Отделения Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">NANOTECH Centre, Ural Federal University</institution></aff><aff><institution xml:lang="ru">НОЦ НАНОТЕХ, Уральский федеральный университет им. Б.Н. Ельцина</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-04-05" publication-format="electronic"><day>05</day><month>04</month><year>2024</year></pub-date><volume>514</volume><issue>1</issue><fpage>65</fpage><lpage>71</lpage><history><date date-type="received" iso-8601-date="2025-02-02"><day>02</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-9535/article/view/651922">https://journals.eco-vector.com/2686-9535/article/view/651922</self-uri><abstract xml:lang="en"><p>The six-component high-entropy carbide (<bold>HEC</bold>) (Ti<sub>0.2</sub>Zr<sub>0.2</sub>Hf<sub>0.2</sub>Nb<sub>0.2</sub>Ta<sub>0.2</sub>)C has been studied. The electronic structure was calculated by using the <italic>ab initio</italic> package VASP for a supercell with 512 atoms constructed by using special quasi-random structures. The artificial neural networks potential (<bold>ANN</bold>-potential) was obtained by deep machine learning. The quality of the ANN-potential was estimated by the value of the energies, forces, and virials standard deviations. The generated ANN-potential was used to analyze both a defect-free model of the specified alloy, with 4096 atoms, and for the first time a polycrystalline HEC model, with 4603 atoms, by using the LAMMPS classical molecular dynamics package. The simulation of uniaxial cell tension was carried out, the elasticity coefficients, the all-round compression modulus, the elasticity modulus, and Poisson’s ratio were determined. The obtained values are in good agreement with the experimental and calculated data, which indicates a good predictive ability of the generated ANN-potential.</p></abstract><trans-abstract xml:lang="ru"><p>Изучен шестикомпонентный высокоэнтропийный карбид (<bold>ВЭК</bold>) (Ti<sub>0.2</sub>Zr<sub>0.2</sub>Hf<sub>0.2</sub>Nb<sub>0.2</sub>Ta<sub>0.2</sub>)C. Электронная структура рассчитывалась <italic>ab initio</italic> с помощью пакета VASP для суперячейки из 512 атомов, построенной с применением специальных квазислучайных структур. Путем глубокого машинного обучения получен потенциал искусственных нейронных сетей (<bold>ИНС</bold>-потенциал), качество которого оценивалось по величине среднеквадратичных отклонений энергий, сил и вириалов. Сгенерированный ИНС-потенциал использовался в пакете классической молекулярной динамики LAMMPS для анализа как бездефектной модели указанного сплава, состоящей из 4096 атомов, так и впервые для модели поликристаллического ВЭК, состоящей из 4603 атомов. Было проведено моделирование одноосного растяжения ячейки, определены коэффициенты упругости, модуль всестороннего сжатия, модуль упругости и коэффициент Пуассона. Полученные значения хорошо согласуются с экспериментальными и расчетными данными, что говорит о хорошей предсказательной способности сгенерированного потенциала.</p></trans-abstract><kwd-group xml:lang="en"><kwd>high-entropy ceramics</kwd><kwd>ab initio molecular dynamics</kwd><kwd>machine learning potential</kwd><kwd>mechanical properties</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>высокоэнтопийная керамика</kwd><kwd>ab initio молекулярная динамика</kwd><kwd>потенциал машинного обучения</kwd><kwd>механические свойства</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">ИМЕТ УрО РАН</institution></institution-wrap><institution-wrap><institution xml:lang="en">Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Yeh J.-W., Chen S.-K., Lin S.-J., Gan J.-Y., Chin T.-S., Shun T.-T., Tsau C.-H., Chang S.-Y. // Adv. 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