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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2025-16-2-225-234</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-19</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="en"><subject>PHYSICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>Elastic and thermal properties of some ternary β-Ti based alloys</article-title><trans-title-group xml:lang="ru"><trans-title>Упругие и тепловые свойства ряда тройных сплавов на основе β-Ti</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0234-884X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Каспарян</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Kasparyan</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Олегович Каспарян</p><p>пр. Академический, 2/4, Томск, 634055</p><p>пр. Ленина, 36, Томск, 634050</p></bio><bio xml:lang="en"><p>Sergey O. Kasparyan</p><p>Akademicheskii, 2/4, Tomsk, 634055</p><p>Lenina, 36, Tomsk, 634050</p></bio><email xlink:type="simple">ks-ftf-isopams@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/0009-0008-4124-450X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ордабаев</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Ordabaev</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адиль Еркенович Ордабаев</p><p>пр. Ленина, 36, Томск, 634050</p></bio><bio xml:lang="en"><p>Adil E. Ordabaev</p><p>Lenina, 36, Tomsk, 634050</p></bio><email xlink:type="simple">adil.ordabaev04@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/0000-0001-5099-3942</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бакулин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Bakulin</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Викторович Бакулин</p><p>пр. Академический, 2/4, Томск, 634055</p></bio><bio xml:lang="en"><p>Alexander V. Bakulin</p><p>Akademicheskii, 2/4, Tomsk, 634055</p></bio><email xlink:type="simple">bakulin@ispms.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7155-3492</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кулькова</surname><given-names>С. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kulkova</surname><given-names>S. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кулькова Светлана Евгеньевна</p><p>пр. Академический, 2/4, Томск, 634055</p></bio><bio xml:lang="en"><p>Svetlana E. Kulkova</p><p>Akademicheskii, 2/4, Tomsk, 634055</p></bio><email xlink:type="simple">kulkova@ispms.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики прочности и материаловедения Сибирского отделения Российской академии наук; Национальный исследовательский Томский государственный университет</institution></aff><aff xml:lang="en"><institution>Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences; National Research Tomsk State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Томский государственный университет</institution></aff><aff xml:lang="en"><institution>National Research Tomsk State University</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт физики прочности и материаловедения Сибирского отделения Российской академии наук</institution></aff><aff xml:lang="en"><institution>Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>19</day><month>05</month><year>2025</year></pub-date><volume>16</volume><issue>2</issue><fpage>225</fpage><lpage>234</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kasparyan S.O., Ordabaev A.E., Bakulin A.V., Kulkova S.E., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Каспарян С.О., Ордабаев А.Е., Бакулин А.В., Кулькова С.Е.</copyright-holder><copyright-holder xml:lang="en">Kasparyan S.O., Ordabaev A.E., Bakulin A.V., Kulkova S.E.</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://nanojournal.ifmo.ru/jour/article/view/19">https://nanojournal.ifmo.ru/jour/article/view/19</self-uri><abstract><p>The elastic moduli and some thermal properties of four series of ternary β-Ti based alloys of the XY3Ti11 composition, where X and Y are elements of IVB–VIB, IIIA and IVA groups, have been studied using the projector augmented wave method within the density functional theory. It has been shown that the calculated Young’s moduli in these series of alloys are lower than those in commercially pure α-Ti titanium or in the Ti-6Al-4V alloy. With an increase in the concentration of s,p-elements and the number of electrons in the d-band of the X-metal, the Young’s modulus tends to decrease. The variation of Debye temperature, acoustic Gruneisen parameter and thermal conductivity in titanium alloy series is discussed. It is shown that¨ high thermal conductivity correlates with high Debye temperature, which in turn increases with increase of the values of the Young’s modulus.</p></abstract><trans-abstract xml:lang="ru"><p>Методом проекционных присоединенных волн в рамках теории функционала плотности проведено изучение упругих модулей и ряда тепловых свойств четырех серий тройных сплавов на основе β-Ti состава XY3Ti11, где Х и Y – элементы IVB–VIB, IIIA и IVA групп. Показано, что в данных сериях сплавов рассчитанные модули Юнга меньше, чем в чистом техническом α-Ti титане или в сплаве Ti-6Al-4V. С увеличением концентрации s,p-элементов и числа электронов на d-оболочке Х-металла модуль Юнга демонстрирует тенденцию к понижению. Обсуждается изменение температуры Дебая, акустического параметра Грюнайзена, а также теплопроводности в рядах титановых сплавах. Показано, что высокая теплопроводность коррелирует с высокими значениями температуры Дебая, которая, в свою очередь, увеличивается с ростом значений модуля Юнга. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>Сплавы титана</kwd><kwd>упругие модули</kwd><kwd>теплопроводность</kwd><kwd>ab-initio расчеты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>titanium alloys</kwd><kwd>elastic moduli</kwd><kwd>thermal conductivity</kwd><kwd>the ab-initio calculations</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was performed according to the Government research assignment for ISPMS SB RAS, project FWRW-2022-0001. 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