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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">vsgiu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Сибирского государственного индустриального университета</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of the Siberian State Industrial University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304 - 4497</issn><issn pub-type="epub">2307-1710</issn><publisher><publisher-name>Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.57070/2304-4497-2024-1(47)-19-34</article-id><article-id custom-type="elpub" pub-id-type="custom">vsgiu-76</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>Раздел 1. Физика конденсированного состояния</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Section 1. Condensed Matter Physics</subject></subj-group></article-categories><title-group><article-title>МОДЕЛЬ КОНВЕКТИВНОГО ТЕПЛОПЕРЕНОСА В ВЫСОКОЭНТРОПИЙНЫХ СПЛАВАХ ПРИ ЭЛЕКТРОННО-ПУЧКОВОЙ ОБРАБОТКЕ</article-title><trans-title-group xml:lang="en"><trans-title>MODEL OF CONVECTIVE HEAT TRANSFER IN HIGH-ENTROPY ALLOYS DURING ELECTRON BEAM PROCESSING</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4861-0778</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сарычев</surname><given-names>Владимир Дмитриевич</given-names></name><name name-style="western" xml:lang="en"><surname>Sarychev</surname><given-names>Vladimir D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры естественнонаучных дисциплин им. профессора В.М. Финкеля</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Associate Professor of the Department of Natural Sciences named after Professor V.M. Finkel</p></bio><email xlink:type="simple">sarychev_vd@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/0000-0001-7032-9029</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Невский</surname><given-names>Сергей Андреевич</given-names></name><name name-style="western" xml:lang="en"><surname>Nevskii</surname><given-names>Sergei A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры естественнонаучных дисциплин им. профессора В.М. Финкеля</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Department of Natural Sciences named after Professor V.M. Finkel</p></bio><email xlink:type="simple">nevskiy.sergei@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/0009-0006-4583-8431</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Грановский</surname><given-names>Алексей Юрьевич</given-names></name><name name-style="western" xml:lang="en"><surname>Granovsky</surname><given-names>Aleksei Y.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., старший научный сотрудник Управления научных исследований</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Senior Researcher of the Department of Scientific Research</p></bio><email xlink:type="simple">legatokun@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1878-909X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бащенко</surname><given-names>Людмила Петровна</given-names></name><name name-style="western" xml:lang="en"><surname>Bashchenko</surname><given-names>Lyudmila P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры теплоэнергетики и экологии</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Associate Professor of the Department. of Thermal Power Engineering and Ecology</p></bio><email xlink:type="simple">luda.baschenko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шамсутдинова</surname><given-names>Диана Витальевна</given-names></name><name name-style="western" xml:lang="en"><surname>Shamsutdinova</surname><given-names>Diana V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студент Института педагогического образования</p></bio><bio xml:lang="en"><p>student</p></bio><email xlink:type="simple">dianas1009hamsutdinova@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный&#13;
университет</institution><country>Russian Federation</country></aff><aff xml:lang="en"><institution>Siberian State Industrial 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>25</day><month>03</month><year>2024</year></pub-date><volume>0</volume><issue>1</issue><fpage>19</fpage><lpage>34</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сарычев В.Д., Невский С.А., Грановский А.Ю., Бащенко Л.П., Шамсутдинова Д.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Сарычев В.Д., Невский С.А., Грановский А.Ю., Бащенко Л.П., Шамсутдинова Д.В.</copyright-holder><copyright-holder xml:lang="en">Sarychev V., Nevskii S., Granovsky A., Bashchenko L., Shamsutdinova 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://vestnik.sibsiu.ru/jour/article/view/76">https://vestnik.sibsiu.ru/jour/article/view/76</self-uri><abstract><p>Предложена модель конвективного перемешивания при обработке низкоэнергетическими сильноточными электронными пучками высокоэнтропийных расплавов систем AlCoCrFeNi и CuBiSnInPb с учетом испарения с поверхности материалов. В основу модели положены представления, что обработка концентрированными потоками энергии приводит к возникновению в расплавленном слое вихревых паттернов. Механизм их образования заключается в том, что наличие градиента температур в расплавленном слое приводит к возникновению термокапиллярной конвекции. Основными уравнениями модели конвективного течения являются уравнения Навье-Стокса, теплопереноса в жидких средах и граничные условия с учетом оттока испарившегося материала. Решение этих уравнений методом конечных элементов проводилось для двух случаев. В первом случае не учитывалась зависимость теплофизических параметров от температуры, а во втором данная зависимость была учтена. В первом случае на стадии нагрева течение расплава AlCoCrFeNi носит ламинарный характер. Неустойчивость течения наблюдается на границе расплав/твердое тело. Стадия остывания характеризуется образованием вихревых течений. Формирование вихрей происходит как на расстояниях, близких к радиусу пятна облучения, так и в центральной области. В случае сплава CuBiSnInPb наблюдается такая же картина с той лишь разницей, что процессы конвективного течения протекают быстрее из-за меньших значений поверхностного натяжения и температуры ликвидуса. Во втором случае электронно-пучковая обработка приводит к формированию многовихревого паттерна, который, развиваясь на стадии нагрева, захватывает все новые области материала. На стадии остывания наблюдается слияние вихрей и формирование стационарного ламинарного течения.</p></abstract><trans-abstract xml:lang="en"><p>A model of convective mixing is proposed for processing high-entropy melts of AlCoCrFeNi and CuBiSnInPb systems with low-energy high-current electron beams, taking into account evaporation from the surface of materials. The model is based on the idea that processing with concentrated energy flows leads to the appearance of vortex patterns in the molten layer. The mechanism of their formation lies in the fact that the presence of a temperature gradient in the melted layer leads to the occurrence of thermocapillary convection. The convective flow model is based on the Navier-Stokes equations, heat transfer in liquid media and boundary conditions taking into account the outflow of evaporated material. The solution of these equations by the finite element method was carried out for two cases. In the first case, the dependence of thermophysical parameters on temperature was not taken into account, and in the second, this dependence was taken into account. It showed that in the first case in the AlCoCrFeNi melt at the heating stage, the melt flow is laminar. The instability of this flow is observed at the "melt/solid" boundary. The cooling stage is characterized by the formation of vortex flows. The formation of vortices occurs both at a distance close to the radius of the irradiation spot and in the central region. In the case of the CuBiSnInPb alloy, the same pattern is observed, with the only difference that the convective flow processes proceed faster due to lower values of surface tension and liquidus temperature compared to the previous case. In the second case, electron beam processing leads to the formation of a multi-vortex pattern, which, developing at the heating stage, captures all new areas of the material. At the cooling stage, the fusion of vortices and the formation of a stationary laminar flow is observed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термокапиллярная неустойчивость</kwd><kwd>конвективные течения</kwd><kwd>высокоэнтропийные сплавы</kwd><kwd>вихревой паттерн</kwd><kwd>испарение</kwd><kwd>метод конечных элементов</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermocapillary instability</kwd><kwd>convective flows</kwd><kwd>high-entropy alloys</kwd><kwd>vortex pattern</kwd><kwd>evaporation</kwd><kwd>finite element method</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">Gao B., Hu L., Li S.-W., Hao Y., Zhang Y.-D., Tu G.-F. Study on the nanostructure for-mation mechanism of hypereutectic Al–17.5 Si alloy induced by high current pulsed elec-tron beam. 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