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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">10.17073/0021-3438-2023-5-57-68</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1530</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>Исследование влияния фазового состава на термическое расширение и механические свойства сплавов Al–Сu–Li</article-title><trans-title-group xml:lang="en"><trans-title>Investigation into the impact of phase composition on the thermal expansion and mechanical properties of Al–Cu–Li alloys</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3160-5179</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ашмарин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ashmarin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артем Александрович Ашмарин – к.т.н., ведущий научный сотрудник</p><p>119334, г. Москва, Ленинский пр-т, 49</p></bio><bio xml:lang="en"><p>49 Leninskiy Prosp., Moscow, 119334</p></bio><email xlink:type="simple">ashmarin_artem@list.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/0009-0003-0538-6926</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гордеева</surname><given-names>М. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gordeeva</surname><given-names>M. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маргарита Игоревна Гордеева – к.т.н., доцент кафедры 1102</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">gordeevami@mai.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/0000-0003-0931-2839</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бецофен</surname><given-names>С. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Betsofen</surname><given-names>S. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Яковлевич Бецофен – д.т.н., профессор, кафедра 1101</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">s.betsofen@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/0000-0001-9478-6793</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лозован</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lozovan</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Александрович Лозован – д.т.н., профессор, кафедра 1101</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">loz-plasma@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Wu</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Wu</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ruizhi Wu – PhD, зам. заведующего ключевой лабораторией </p><p>P.R. China, 150001, Harbin, Nantong Str., 145</p></bio><bio xml:lang="en"><p>145 Nantong Str., Harbin 150001</p></bio><email xlink:type="simple">rzwu@hrbeu.edu.cn</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3134-2375</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Александрова</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Alexandrova</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Светлана Сергеевна Александрова – к.т.н., доцент, кафедра 1101</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">sweta.sergeeva@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/0009-0006-0028-1684</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Селиванов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Selivanov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Аркадьевич Селиванов – к.т.н., начальник лаборатории</p><p>105005, г. Москва, ул. Радио, 17</p></bio><bio xml:lang="en"><p>17 Radio Str., Moscow, 105005</p></bio><email xlink:type="simple">julies87@mail.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-9561-7354</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Быкадоров</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bykadorov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артем Никитич Быкадоров – инженер, кафедра 1101</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">xartem94@mail.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/0000-0002-9932-5344</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Прокопенко</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Prokopenko</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Денис Алексеевич Прокопенко – инженер</p><p>125993, г. Москва, Волоколамское шоссе, 4</p></bio><bio xml:lang="en"><p>4 Volokolamskoe Highway, Moscow, 125993</p></bio><email xlink:type="simple">denis.prokop1234@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии и материаловедения им. А.А. Байкова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Metallurgy and Materials Science n.a. A.A. Baikov of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский авиационный институт (национальный исследовательский университет)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow Aviation Institute (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Harbin Engineering University</institution><country>Китай</country></aff><aff xml:lang="en"><institution>Harbin Engineering University</institution><country>China</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Всероссийский научно-исследовательский институт авиационных материалов Национального исследовательского центра «Курчатовский институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>All-Russian Research Institute of Aviation Materials of the National Research Center “Kurchatov Institute”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>10</month><year>2023</year></pub-date><volume>29</volume><issue>5</issue><fpage>57</fpage><lpage>68</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ашмарин А.А., Гордеева М.И., Бецофен С.Я., Лозован А.А., Wu R., Александрова С.С., Селиванов А.А., Быкадоров А.Н., Прокопенко Д.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ашмарин А.А., Гордеева М.И., Бецофен С.Я., Лозован А.А., Wu R., Александрова С.С., Селиванов А.А., Быкадоров А.Н., Прокопенко Д.А.</copyright-holder><copyright-holder xml:lang="en">Ashmarin A.A., Gordeeva M.I., Betsofen S.Y., Lozovan A.A., Wu R., Alexandrova S.S., Selivanov A.A., Bykadorov A.N., Prokopenko D.A.</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/1530">https://cvmet.misis.ru/jour/article/view/1530</self-uri><abstract><p>Методами высокотемпературной рентгенографии, количественного фазового анализа и измерения механических свойств при растяжении определяли корреляционные соотношения характеристик термического расширения (ТКЛР) и фазового состава с усредненными значениями по 3-м направлениям в листах пределов текучести и модулей Юнга сплавов системы Al–Cu–Li: 1441, В-1461, В-1469, В-1480 и В-1481. Содержание меди в твердом растворе и массовые доли фаз T1(Al2CuLi) и δ′(Al3Li) оценивали с помощью оригинальной методики, основанной на измерении периода решетки α-твердого раствора, законе Вегарда и уравнениях баланса элементного и фазового составов сплавов. Показано, что с увеличением отношения лития к меди в сплавах от 0,32 до 1,12 повышается доля δ′(Al3Li)-фазы от 6,3–8,4 мас.% в сплавах В-1481, В-1480 и В-1469 до 16,0–17,3 мас.% в сплавах 1441 и В-1461 за счет снижения количества T1(Al2CuLi)-фазы от 5 до 1 мас.%. Это приводит к увеличению модуля Юнга от 75 до 77 ГПа из-за возрастания суммарной доли интерметаллидов и к снижению предела текучести от 509 до 367 МПа из-за уменьшения количества Т1-фазы, поскольку эффект упрочнения T1-фазы в 3–4 раза превосходит упрочнение от выделения δ′-фазы, что не может быть скомпенсировано повышением суммарной доли интерметаллидов. Тот факт, что модуль Юнга при этом увеличивается, свидетельствует о том, что упругие свойства интерметаллидных фаз близки и возрастание суммарной доли интерметаллидов компенсирует снижение количества T1-фазы. Показано, что величина ТКЛР, измеренная на основании термического расширения твердого раствора, зависит также от характеристик присутствующих в сплаве интерметаллидных фаз, что расширяет возможности интерпретации результатов измерения ТКЛР. </p></abstract><trans-abstract xml:lang="en"><p>The study employed high-temperature X-ray diffraction, quantitative phase analysis, and tensile mechanical property measurements to investigate the relationship between coefficient of thermal expansion (CTE) and phase composition, along with the average yield strengths and Young's moduli of Al–Cu–Li alloys in three different sheet orientations: 1441, V-1461, V-1469, V-1480, and V-1481. The copper content within the solid solution and the mass fractions of the T1(Al2CuLi) and δ′(Al3Li) phases were determined using an innovative technique based on measuring the lattice distance of the α solid solution, Vegard's law, and balance equations for the elemental and phase compositions of the alloys. It was observed that as the lithium-to-copper ratio in the alloys increased from 0.32 to 1.12, the proportion of the δ′(Al3Li) phase increases from 6.3–8.4 wt.% in V-1481, V-1480 and V-1469 alloys to 16.0–17.3 wt.% in 1441 and V-1461 alloys, accompanied by a decrease in the T1(Al2CuLi) phase from 5 to 1 wt.%. This led to an increase in the Young's modulus from 75 to 77 GPa due to higher overall proportion of intermetallic compounds and a reduction in yield strength from 509 to 367 MPa due to the decrease in the T1 phase. This decrease in yield strength resulted from the fact that the hardening effect of the T1 phase was 3–4 times greater than that of the δ′ phase, and this couldn't be offset by an increase in the total intermetallic compound proportion. The observed increase in Young's modulus indicated that the elastic properties of the intermetallic phases were similar, and the rise in the total fraction of intermetallic compounds compensated for the decrease in the T1 phase. Furthermore, it was demonstrated that СTE, as measured based on the thermal expansion of the solid solution, also depended on the characteristics of the intermetallic phases present in the alloy. This expanded the potential interpretations of СTE measurement results. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплавы Al–Cu–Li</kwd><kwd>количественный фазовый анализ</kwd><kwd>высокотемпературная рентгенография</kwd><kwd>ТКЛР</kwd><kwd>модуль Юнга</kwd><kwd>предел текучести</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Al–Cu–Li alloys</kwd><kwd>quantitative phase analysis</kwd><kwd>high temperature radiography</kwd><kwd>СTE</kwd><kwd>Young's modulus</kwd><kwd>yield strength</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">Saringer C., Kickinger C., Munnik F., Schalk N., Tkadletz M. Thermal expansion of magnetron sputtered TiCxN1–x coatings studied by high-temperature X-ray diffraction. 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