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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2024-68-5-413-420</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1217</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>ТЕХНИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TECHNICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Влияние больших скоростей деформации на механическое поведение и структурообразование титанового сплава Ti–6Al–4V</article-title><trans-title-group xml:lang="en"><trans-title>Effect of high strain rates on the mechanical behavior and structure formation of the titanium alloy Ti–6Al–4V</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Покровский</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pokrovsky</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Покровский Артур Игоревич – канд. техн. наук, доцент, заведующий лабораторией.</p><p>ул. Купревича, 10, 220084, Минск</p></bio><bio xml:lang="en"><p>Artur I. Pokrovsky – Ph. D. (Engineering), Associate Professor, Head of the Laboratory, Physical-technical Institute of the National Academy of Sciences of Belarus.</p><p>10, Kuprevich Str., 220084, Minsk</p></bio><email xlink:type="simple">art@phti.by</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>Хина</surname><given-names>Б. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Khina</surname><given-names>B. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хина Борис Борисович – д-р физ.-мат. наук, профессор, гл. науч. сотрудник.</p><p>ул. Купревича, 10, 220084, Минск</p></bio><bio xml:lang="en"><p>Boris B. Khina – D. Sc. (Physics and Mathematics), Professor, Chief Researcher, Physical-technical Institute of the National Academy of Sciences of Belarus.</p><p>10, Kuprevich Str., 220084, Minsk</p></bio><email xlink:type="simple">khina_brs@mail.ru</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>Йонг</surname><given-names>Шю</given-names></name><name name-style="western" xml:lang="en"><surname>Yong</surname><given-names>Xu</given-names></name></name-alternatives><bio xml:lang="ru"><p>Йонг Шю – профессор, руководитель группы.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><bio xml:lang="en"><p>Xu Yong – Professor, Ph. D., Head of the Group, Institute of Metal Research of the Chinese Academy of Sciences.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">yxu@imr.ac.cn</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>Ши-Хонг</surname><given-names>Жанг</given-names></name><name name-style="western" xml:lang="en"><surname>Shi-Hong</surname><given-names>Zhang</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ши-Хонг Жанг – профессор, научный консультант.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><bio xml:lang="en"><p>Zhang Shi-Hong – Professor, Ph. D., Scientific Consultant, Institute of Metal Research of the Chinese Academy of Sciences.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">shzhang@imr.ac.cn</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>Баоченг</surname><given-names>Янг</given-names></name><name name-style="western" xml:lang="en"><surname>Baocheng</surname><given-names>Yang</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баоченг Янг – научный сотрудник.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><bio xml:lang="en"><p>Yang Baocheng – Ph. D., Researcher, Institute of Metal Research of the Chinese Academy of Sciences.</p><p>72, Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">bchyang19b@imr.ac.cn</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Физико-технический институт Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Physical-technical Institute of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт исследования металлов Китайской академии наук</institution></aff><aff xml:lang="en"><institution>Institute of Metals Research of the Chinese Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>06</day><month>11</month><year>2024</year></pub-date><volume>68</volume><issue>5</issue><fpage>413</fpage><lpage>420</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Покровский А.И., Хина Б.Б., Йонг Ш., Ши-Хонг Ж., Баоченг Я., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Покровский А.И., Хина Б.Б., Йонг Ш., Ши-Хонг Ж., Баоченг Я.</copyright-holder><copyright-holder xml:lang="en">Pokrovsky A.I., Khina B.B., Yong X., Shi-Hong Z., Baocheng Y.</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://doklady.belnauka.by/jour/article/view/1217">https://doklady.belnauka.by/jour/article/view/1217</self-uri><abstract><p>Исследовано механическое поведение и структурообразование листовых образцов титанового сплава Ti–6Al–4V. Сравнивали медленную (квазистатическую) деформацию со скоростью ἐ= 0,001, 0,01, 0,1 и 1 с–1 и быструю (динамическую) деформацию по методу Хопкинсона с ἐ = 1290, 2066, 3567 и 3828 с–1. Определены особенности механизма структурообразования сплава Ti–6Al–4V при высокоскоростной деформации (≈3800 с–1), заключающиеся в том, что наряду со скольжением дислокаций развивается двойникование, изменяются характеристики текстуры, присутствующей в исходном листовом материале, происходит пластическая деформация как по всему объему зерен α-фазы, так и зерен β-фазы (в то время как в квазистатическом режиме происходит в основном пластическая деформация зерен α-фазы), формируются дислокационные скопления и ячейки внутри зерен, что свидетельствует об интенсивном взаимодействии дислокаций. Установленные механизмы приводят к существенному повышению технологической пластичности титанового сплава при гидроударной штамповке по сравнению с квазистатической деформацией.</p></abstract><trans-abstract xml:lang="en"><p>The mechanical behavior and structure formation of sheet specimens of the titanium alloy Ti–6Al–4V is studied. Low strain rate (quasi-static) deformation at ἐ = 0.001, 0.01, 0.1 and 1 s–1 is compared with fast (dynamic) deformation performed using the Hopkinson method with ἐ = 1290, 2066, 3567, and 3828 s–1. The features of the structure formation mechanism of the titanium alloy Ti–6Al–4V under high-strain-rate (≈3800 s–1) deformation have been determined, namely that along with the dislocation glide, the twinning develops, the characteristics of texture present in the original sheet material undergo changes, plastic deformation occurs throughout the entire volume of the α-phase and β-phase grains (while in the quasi-static mode, mainly plastic deformation of the α-phase grains takes place), dislocation pile-ups and cells inside the grains are formed, which points to intensive interaction of dislocations. The established mechanisms lead to a substantial increase in technological plasticity of the titanium alloy during impact hydroforming as compared to quasi-static deformation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>структура</kwd><kwd>текстура</kwd><kwd>дислокации</kwd><kwd>титановый сплав Ti–6Al–4V</kwd><kwd>скорость деформации</kwd><kwd>гидроударная штамповка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>structure</kwd><kwd>texture</kwd><kwd>dislocations</kwd><kwd>titanium alloy Ti–6Al–4V</kwd><kwd>strain rate</kwd><kwd>impact hydroforming</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Белорусского республиканского фонда фундаментальных исследований (грант Т24КИТГ-014/2024YFE0108800).</funding-statement><funding-statement xml:lang="en">The work was carried out with the financial support of the Belarusian Republican Foundation for Fundamental Research (grant no. T24КИТГ-014/2024YFE0108800).</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">Влияние скорости деформации на микроструктуру и механические свойства алюминиевого сплава AA2B06-O системы Al–Cu–Mg / Б. Б. Хина [и др.] // Изв. вузов. Цветная металлургия. – 2021. – Т. 27, № 4. – С. 59–69. https://doi.org/10.17073/0021-3438-2021-4-59-69</mixed-citation><mixed-citation xml:lang="en">Khina B. B., Pokrovsky A. I., Shi-Hong Zhang, Yong Xu, Da-Yong Chen, Marysheva A. A. Effect of strain rate on the microstructure and mechanical properties of aluminum alloy AA2B06-O of the Al-Cu-Mg system. Russian Journal of Non-Ferrous Metals, 2021, vol. 62, pp. 545–553. https://doi.org/10.3103/s1067821221050060</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Покровский, А. И. 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