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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">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1528-2024-14-2-88-107</article-id><article-id custom-type="elpub" pub-id-type="custom">techusgu-258</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Моделирование упорядочения и диффузии в сплавах CrXMoNbTaVW в рамках N-частичного подхода при задании межатомных взаимодействий</article-title><trans-title-group xml:lang="en"><trans-title>Simulation of ordering and diffusion in CrxMoNbTaVW alloys within the framework of the N-body approach when specifying interatomic interactions</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-7981-7741</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Максименко</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Maksimenko</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Вячеслав Николаевич Максименко, младший научный сотрудник</p><p>142432; пр-т академика Семенова, д. 1; Черноголовка</p></bio><bio xml:lang="en"><p>Vyacheslav N. Maksimenko, Research Assistant</p><p>142432; 1 Akademika Semenova Ave.; Chernogolovka</p></bio><email xlink:type="simple">maksimenko.vya.nik@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/0000-0003-1404-201X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Липницкий</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Lipnitskii</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Геннадьевич Липницкий, доктор физико-математических наук, профессор</p><p>кафедра наноматериалов и нанотехнологий</p><p>308015; ул. Победы 85; Белгород</p></bio><bio xml:lang="en"><p>Alexey G. Lipnitskii, Doctor of Sciences (Physics and Mathematics), Professor</p><p>Department of Nanomaterials and Nanotechnology</p><p>308015; 85 Pobedy Str.; Belgorod</p></bio><email xlink:type="simple">lipnitskii@bsu.edu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3400-5371</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Малай</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Malai</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Владимирович Малай, доктор, физико-математических наук,профессор</p><p>кафедра теоретической и экспериментальной физики</p><p>308015; ул. Победы 85; Белгород</p></bio><bio xml:lang="en"><p>Nikolay V. Malai, Doctor of Sciences (Physics and Mathematics), Professor</p><p>Department of Theoretical and Experimental Physics</p><p>308015; 85 Pobedy Str.; Belgorod</p></bio><email xlink:type="simple">malay@bsu.edu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6009-1627</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Емельянов</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Emelyanov</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Виктор Михайлович Емельянов, доктор технических наук, профессор, главный научный сотрудник</p><p>кафедра дизайна и индустрии моды</p><p>305040; ул. 50 лет Октября, д. 94; Курск</p></bio><bio xml:lang="en"><p>Victor M. Emelyanov, Doctor of Sciences (Engineering), Professor, Chief Researcher</p><p>305040; 50 Let Oktyabrya Str. 94; Kursk</p></bio><email xlink:type="simple">vmemelianov@yandex.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФИЦ проблем химической физики и медицинской химии РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>The Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белгородский государственный национальный исследовательский университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Belgorod State National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>01</day><month>07</month><year>2024</year></pub-date><volume>14</volume><issue>2</issue><fpage>88</fpage><lpage>107</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Максименко В.Н., Липницкий А.Г., Малай Н.В., Емельянов В.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Максименко В.Н., Липницкий А.Г., Малай Н.В., Емельянов В.М.</copyright-holder><copyright-holder xml:lang="en">Maksimenko V.N., Lipnitskii A.G., Malai N.V., Emelyanov V.M.</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://techusgu.elpub.ru/jour/article/view/258">https://techusgu.elpub.ru/jour/article/view/258</self-uri><abstract><sec><title>   Цель</title><p>   Цель. Разработка потенциалов межатомных взаимодействий для атомистического моделирования сплавов на основе тугоплавких металлов системы V-Cr-Nb-Mo-Ta-W и атомистическое моделирование с использованием данных потенциалов упорядочения и диффузии в сплавах CrxMoNbTaVW.</p></sec><sec><title>   Методы</title><p>   Методы. Разработка потенциалов межатомных взаимодействий системы V-Cr-Nb-Mo-Ta-W проводилась в рамках N-частичного подхода. Для оптимизации параметров потенциалов в качестве целевых значений были использованы результаты расчетов в рамках теории функционала электронной плотности с помощью программного пакета VASP; моделирование упорядочения и диффузии проводилось с использованием методов молекулярной динамики и разработанного нами ранее комбинированного метода молекулярной динамики и метода Монте-Карло (МД+МК).</p></sec><sec><title>   Результаты</title><p>   Результаты. В рамках N-частичного подхода построены потенциалы, которые дополняют систему потенциалов V-Nb-Mo-W, построенную нами ранее, до системы V-Cr-Nb-Mo-Ta-W. С помощью данных потенциалов методом МД+МК проведено моделирование сплавов CrxMoNbTaVW, где 𝑥 = 0, 0,5, 1, 2 и 3, в области температур от 500 ºC до 2300 ºC. Получено согласие МД+МК расчетов и CALPHAD данных в областях температур и концентраций, содержащих одну ОЦК фазу. При температуре 1000 ºС расчеты методом МД + МК показывают наличие одной ОЦК фазы, что противоречит данным CALPHAD, однако согласуется с экспериментальными данными. Методом молекулярной динамики впервые рассчитаны абсолютные значения коэффициентов диффузии компонентов и значения эффективной энергии активации диффузии в твердом растворе CrMoNbTaVW. Анализ рассчитанных диффузионных характеристик указывает, что в сплаве CrMoNbTaVW реализуется механизм диффузии, включающий согласованное перемещение атомов разного сорта.</p></sec><sec><title>   Заключение</title><p>   Заключение. Проведенное в работе развитие методов атомистического моделирования сплавов на основе тугоплавких металлов системы V-Cr-Nb-Mo-Ta-W и полученные результаты атомистического моделирования упорядочения и диффузии в сплавах CrxMoNbTaVW показали важное значение для объяснения и прогнозов вызванной диффузионными процессами жаропрочности в многокомпонентных сплавах при высоких температурах.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Purpose</title><p>   Purpose. Development of interatomic potentials for atomistic simulation of alloys based on refractory metals of the V-Cr-Nb-Mo-Ta-W system and atomistic simulation using these ordering and diffusion potentials in CrxMoNbTaVW alloys.</p></sec><sec><title>   Methods</title><p>   Methods. The development of the interatomic potentials of the V-Cr-Nb-Mo-Ta-W system was carried out within the framework of the 𝑁-body approach; To optimize the parameters of the potentials, the results of calculations within the framework of the electron density functional theory using the VASP software package were used as target values; the simulations of ordering and diffusion was carried out using methods of molecular dynamics and the developed We have previously used the combined method of molecular dynamics and the Monte Carlo method (MD+MK).</p></sec><sec><title>   Results</title><p>   Results. Within the framework of the 𝑁-body approach, potentials are constructed that complement the V-Nb-Mo-W potential system that we built earlier to the V-Cr-Nb-Mo-Ta-W system. The constructed potentials predict the characteristics of alloys in good agreement with experimental data, CALPHAD data and density functional theory data. Using these potentials by the MD+MC method, CrxMoNbTaVW alloys were modeled, where 𝑥 = 0, 0.5, 1, 2 and 3, in the temperature range from 500 ºC to 2300 ºC. The MD+MC calculations and CALPHAD data agreed in the temperature and concentration regions containing one phase of BCC. At a temperature of 1000ºC, MD + MC calculations show the presence of a single BCC phase, which contradicts CALPHAD data, but is consistent with experimental data. The simulation showed that the atomic structure of the CrMoNbTaVW model alloy is self-sufficient to realize the diffusion of components without artificial introduction of vacancies. The absolute values of the diffusion coefficients of the components and the values of the effective activation energy of diffusion in a solid solution of CrMoNbTaVW were calculated for the first time by the method of molecular dynamics. Analysis of the calculated diffusion characteristics indicates that a diffusion mechanism is implemented in the CrMoNbTaVW alloy, which includes coordinated movement of atoms of various grades.</p></sec><sec><title>   Conclusion</title><p>   Conclusion. The development of methods for atomistic simulations of alloys based on refractory metals of the V-Cr-Nb-Mo-Ta-W system and the results of atomistic simulation of ordering and diffusion in CrxMoNbTaVW alloys have shown their importance for explaining and predicting heat resistance caused by diffusion processes in multicomponent alloys at high temperatures.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>потенциалы межатомного взаимодействия</kwd><kwd>молекулярная динамика</kwd><kwd>диффузия</kwd><kwd>параметр порядка</kwd><kwd>высокоэнтропийные сплавы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Interatomic potentials</kwd><kwd>molecular dynamics</kwd><kwd>diffusion</kwd><kwd>short range order parameter</kwd><kwd>high-entropy alloys</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке гранта РНФ №22-72-10026</funding-statement><funding-statement xml:lang="en">The work was supported by the Russian Science Foundation Project No.22-72-10026</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">Senary refractory high-entropy alloy CrMoNbTaVW / B. 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