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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">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ МИСИС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2023-1-75-83</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1453</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>Металловедение и термическая обработка</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Physical Metallurgy and Heat Treatment</subject></subj-group></article-categories><title-group><article-title>Взаимная диффузия в системах на основе тугоплавких металлов с ОЦК-решеткой: титан–тантал и титан – многокомпонентный (высокоэнтропийный) сплав</article-title><trans-title-group xml:lang="en"><trans-title>Interdiffusion in refractory metal systems with a BCC lattice: titanium–tantalum and titanium–multicomponent (high-entropy) alloy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0055-4834</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Разумовский</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Razumovsky</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры физической химии</p><p>119049,  г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Mikhail I.  – Postgraduate Student of the Department of Physical Chemistry</p><p>4 Leninkii pr., Moscow, 119049</p></bio><email xlink:type="simple">razmikhail@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/0000-0003-1209-7594</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Родин</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Rodin</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.ф.-м.н., доцент кафедры физической химии</p><p>119049,  г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Cand. Sci. (Phys.-Math.), Associate Prof. of the Department of Physical Chemistry</p><p>4 Leninkii pr., Moscow, 119049</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бокштейн</surname><given-names>Б. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Bokstein</surname><given-names>B. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>119049,  г. Москва, Ленинский пр-т, 4</p></bio><bio xml:lang="en"><p>Dr. Sci. (Phys.-Math.), Prof. of the Department of Physical Chemistry</p><p>4 Leninkii pr., Moscow, 119049</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСИС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology “MISIS”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>19</day><month>02</month><year>2023</year></pub-date><volume>29</volume><issue>1</issue><fpage>75</fpage><lpage>83</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Разумовский М.И., Родин А.О., Бокштейн Б.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Разумовский М.И., Родин А.О., Бокштейн Б.С.</copyright-holder><copyright-holder xml:lang="en">Razumovsky M.I., Rodin A.O., Bokstein B.S.</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://cvmet.misis.ru/jour/article/view/1453">https://cvmet.misis.ru/jour/article/view/1453</self-uri><abstract><p>Изучены особенности взаимной диффузии в многокомпонентных (высокоэнтропийных) сплавах на основе тугоплавких металлов. В качестве объектов диффузионного исследования были выбраны следующие пары: титан – эквиатомный сплав (Hf–Nb–Ta–Ti–Zr–Mo) и, для сравнения, титан–тантал. Рассмотрены вопросы приготовления образцов, исследования микроструктуры, методика подготовки образцов для изучения диффузии и экспериментальные результаты. Диффузионный отжиг был проведен в течение 12 ч в вакууме с остаточным давлением аргона 6,65·10–3 Па при температуре 1200 °С. Особое внимание уделено методике соединения диффузионных пар (титана с танталом, титана со сплавом) путем термоциклирования вблизи температуры полиморфного превращения в титане (882 °С) в пределах ±50 °С. Показано поведение наиболее характерных элементов (Ta, Zr, Ti) в области сварного шва после соединения диффузионной пары титана и сплава. Впервые получены данные о зависимости интенсивности соответствующей линии спектра для титана и элементов многокомпонентного сплава от глубины проникновения. Изменение интенсивности сигнала для элементов систем наблюдается на глубине 150–200 мкм, а резкое падение интенсивности сигнала происходит на глубинах порядка 50 мкм. Рассчитано усредненное по всем элементам системы легирования сплава (за исключением титана) эффективное значение коэффициента диффузии элементов в титан при температуре 1200 °С. Проведено сравнение полученного значения со справочными данными: коэффициентом самодиффузии в β-титане, коэффициентами диффузии в парах титана с легирующими элементами сплава.</p></abstract><trans-abstract xml:lang="en"><p>In this work, the interdiffusion features in multicomponent (high-entropy) alloys of refractory metals were studied. The following pairs were chosen as the diffusion study objects: titanium–equiatomic alloy (Hf–Nb–Ta–Ti–Zr–Mo) and titanium–tantalum for the sake of comparison. The article covers the issues of sample preparation, microstructure study, sample preparation methodology for diffusion research, and experimental results. Diffusion annealing was carried out for 12 h in a vacuum at a residual argon pressure of 6.65·10–3 Pa and a temperature of 1200 °С. Particular attention was paid to the method of combining diffusion pairs (titanium with tantalum, titanium with alloy) by thermal cycling near the polymorphic transformation temperature in titanium (882 °C) within ± 50 °C. The behaviour of the most characteristic elements (Ta, Zr, Ti) in the weld area after the titanium and alloy diffusion pair joining was demonstrated. This is the first time that data on the dependence of the intensity of the corresponding spectral line for titanium and elements of a multicomponent alloy on the penetration depth were obtained. A change in the signal intensity for system elements was observed at a depth of 150–200 μm, whereas a sharp drop in the signal intensity was seen to occur at depths of about 50 μm. The effective value of the coefficient of diffusion of elements into titanium averaged over all elements of the alloying system (except for titanium) at a temperature of 1200 °C was calculated. The obtained value was compared to reference data: the self-diffusion coefficient in β-titanium and diffusion coefficients in titanium pairs with alloy doping elements.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэнтропийные сплавы на основе многих тугоплавких металлов</kwd><kwd>параметры взаимной диффузии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>high-entropy alloys based on multiple refractory metals</kwd><kwd>interdiffusion parameters</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта Российского фонда фундаментальных исследований (проект № 20–03–00387).</funding-statement><funding-statement xml:lang="en">: This study was carried out with the financial support of a grant from the Russian Foundation for Basic Research (Project No. 20–03–00387)</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">Divinski S.V., Lukianova O.A., Wilde G., Dash A., Esakkiraja N., Paul A. 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