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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">10.17073/0021-3438-2021-4-59-69</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1278</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>Влияние скорости деформации на микроструктуру и механические свойства алюминиевого сплава AA2B06-O системы Al–Cu–Mg</article-title><trans-title-group xml:lang="en"><trans-title>Effect of strain rate on the microstructure and mechanical properties of aluminum alloy AA2B06-O of the Al–Cu–Mg system</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>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>Доктор физико-математеематических наук, профессор кафедры естественных и общетехнических дисциплин; главный научный сотрудник лаборатории высоких давлений и специальных сплавов</p><p>220096, Беларусь, г. Минск, ул. Уборевича, 77</p><p> </p></bio><bio xml:lang="en"><p>Dr. Sci. (Phys.-Math.), Professor of the Department of natural and general engineering sciences, Belorussian State Aviation Academy; Principal research scientist of the Laboratory of high pressures and special alloys</p><p>77 Uborevich Str., Minsk, 220096, Belarus</p><p>10 Kuprevich str., Minsk, 220141, Belarus</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>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>Кандидат технических наук, заведующий лабораторией ВДСС</p><p>220141, г. Минск, ул. Купревича, 10</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Head of the Laboratory of HPSA</p><p>10 Kuprevich str., Minsk, 220141</p></bio><email xlink:type="simple">arturu@tut.by</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>Shi-Hong</surname><given-names>Zhang</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>Профессор, руководитель группы передовых технологий обработки металлов давлением; зам. директора по специальным материалам и устройствам; директор Центра инженерных исследований прецизионных медных труб</p><p>72 Wenhua Road, Shenyang, 110016</p></bio><bio xml:lang="en"><p>Prof., Leader of Advanced metal forming technology (AMFT) group, Vice Director of special materials and devices, Director of Engineering research centre for precision copper tubes</p><p>72 Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">shzhang@imr.ac.cn</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Yong</surname><given-names>Xu</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>Доцент, PhD, член группы передовых технологий обработки металлов давлением</p><p>72 Wenhua Road, Shenyang, 110016</p><p> </p></bio><bio xml:lang="en"><p>Associate prof., PhD, Member of AMFT Group</p><p>72 Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">yxu@imr.ac.cn</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Da-Yong</surname><given-names>Chen</given-names></name><name name-style="western" xml:lang="en"><surname>Da-Yong</surname><given-names>Chen</given-names></name></name-alternatives><bio xml:lang="ru"><p>Аспирант в группе передовых технологий обработки металлов давлением</p><p>72 Wenhua Road, Shenyang, 110016</p></bio><bio xml:lang="en"><p>PhD student of AMFT Group</p><p>72 Wenhua Road, Shenyang, 110016</p></bio><email xlink:type="simple">dychen15b@imr.ac.cn</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Марышева</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Marysheva</surname><given-names>А. А.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Научный сотрудник лаборатории ВДСС</p><p>220141, г. Минск, ул. Купревича, 10</p><p> </p><p> </p></bio><bio xml:lang="en"><p>Researcher, Laboratory of HPSA</p><p>10 Kuprevich str., Minsk, 220141</p></bio><email xlink:type="simple">alinabakinovskaja@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусская государственная академия авиации; Физико-технический институт Национальной академии наук Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belorussian State Aviation Academy; Physicotechnical Institute, National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Физико-технический институт Национальной академии наук Беларуси</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Physicotechnical Institute, National Academy of Sciences of Belarus</institution><country>Belarus</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт исследования металлов Китайской академии наук</institution><country>Китай</country></aff><aff xml:lang="en"><institution>Institute of Metal Research, Chinese Academy of Sciences</institution><country>China</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>13</day><month>08</month><year>2021</year></pub-date><volume>0</volume><issue>4</issue><fpage>59</fpage><lpage>69</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хина Б.Б., Покровский А.И., Shi-Hong Z., Yong X., Da-Yong C., Марышева А.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Хина Б.Б., Покровский А.И., Shi-Hong Z., Yong X., Da-Yong C., Марышева А.А.</copyright-holder><copyright-holder xml:lang="en">Khina B.B., Pokrovsky A.I., Shi-Hong Z., Yong X., Da-Yong C., Marysheva А.А.</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/1278">https://cvmet.misis.ru/jour/article/view/1278</self-uri><abstract><p>Исследованы механические свойства при растяжении и микроструктура авиационного алюминиевого сплава AA2B06-O системы Al–Cu–Mg при малых (0,001–1,0 с–1) и высоких (1293–5045 с–1) скоростях деформации. При относительно медленном (квазистатическом) растяжении скорость деформации слабо влияет на механические характеристики. При быстром (динамическом) нагружении повышение скорости деформации приводит к существенному (почти в 2 раза) одновременному увеличению предела прочности сплава при растяжении и его пластичности (относительного удлинения до разрушения) при почти неизменном пределе текучести. С помощью просвечивающей электронной микроскопии установлен гомогенный характер пластической деформации на микроуровне при медленном нагружении и негомогенный – при быстром, проявляющийся в ее локализации в виде адиабатических микрополос сдвига, в которых формируются сложные дислокационные структуры, такие как сплетения дислокаций, дипольные и мультипольные конфигурации. В отдельных участках микрополос сдвига наблюдается первая стадия динамической рекристаллизации из-за выделяющейся теплоты локализованной пластической деформации. Показано, что смена механизма деформации при переходе от квазистатического к динамическому растяжению является причиной значительного изменения механического поведения материала. Таким образом, одновременное повышение прочности и пластичности может иметь место не только в наноструктурированных сплавах, полученных методами интенсивной пластической деформации (например, равноканальным угловым прессованием), но и при высокоскоростной деформации алюминиевого сплава с «обычной» микроструктурой после прокатки и низкотемпературного отжига. Экспериментальные результаты открывают новые перспективы практического применения методов высокоскоростной импульсной деформации, таких как гидроударная штамповка, для получения деталей сложной формы из листовых заготовок за одну операцию вследствие значительного улучшения технологической пластичности материала.</p></abstract><trans-abstract xml:lang="en"><p>The study covers the tensile properties and microstructure of AA2B06-O aerospace aluminum alloy (Al–Cu–Mg system) at low (0.001–1.0 s–1) and high (1293–5045 s–1) strain rates. The stain rate at relatively slow (quasistatic) tension has a small effect on mechanical properties. Rasing strain rate at fast (dynamic) loading results in a substantial (nearly twofold) simultaneous increase in the ultimate tensile strength and plasticity (elongation to failure) of the alloy with the yield stress virtually unchanged. Transmission electron microscopy revealed a homogeneous nature of plastic deformation on the microlevel at slow loading and inhomogeneous one at fast loading. The latter is observed as localized deformation in the form of adiabatic microshear bands where complex dislocation structures are formed such as dislocation tangles, dipole and multipole configurations. The first stage of dynamic recrystallization is observed in certain domains of microshear bands due to the heat released at localized plastic deformation. It was shown that the changeover of deformation mechanisms when passing from the quasistatic to dynamic tension causes a significant change in mechanical behavior of the material. Thus, a simultaneous increase in both strength and plasticity can take place not only in nanostructured materials obtained by severe plastic deformation techniques (e.g. equal channel angular pressing), but also at the high strain rate deformation of an aluminum alloy having an «ordinary» microstructure after rolling and low-temperature annealing. The experimental results open up new prospects for practical application of high strain rate pulse deformation methods, such as impact hydroforming, for producing complex-shape articles from sheet blanks in one operation due to substantially improved technological plasticity of the material.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гидроударная штамповка</kwd><kwd>алюминиевые сплавы</kwd><kwd>высокоскоростная деформация</kwd><kwd>механические свойства</kwd><kwd>тех- нологическая пластичность</kwd><kwd>микроструктура</kwd><kwd>дислокации</kwd><kwd>адиабатические микрополосы сдвига</kwd></kwd-group><kwd-group xml:lang="en"><kwd>impact hydroforming</kwd><kwd>aluminum alloys</kwd><kwd>high strain rate deformation</kwd><kwd>mechanical properties</kwd><kwd>technological plasticity</kwd><kwd>microstructure</kwd><kwd>dislocations</kwd><kwd>adiabatic microshear bands</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Белорусского республиканского фонда фундаментальных исследований (белорусско-китайский проект Т19КИТГ-001 от 21.06.2019).</funding-statement><funding-statement xml:lang="en">The research was funded by the Belarusian Republican Foundation for Fundamental Research under Belarus-China project Т19КИТГ-001 of 21.06.2019.</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">Покровский А.И. 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