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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Frontier Materials &amp; Technologies</journal-id><journal-title-group><journal-title xml:lang="en">Frontier Materials &amp; Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Frontier Materials &amp; Technologies</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4039</issn><issn publication-format="electronic">2782-6074</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">845</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2023-2-64-7</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Microstructure and properties of the Zn–1%Li–2%Mg alloy subjected to severe plastic deformation</article-title><trans-title-group xml:lang="ru"><trans-title>Микроструктура и свойства сплава Zn–1%Li–2%Mg, подвергнутого интенсивной пластической деформации</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9948-1099</contrib-id><name-alternatives><name xml:lang="en"><surname>Sitdikov</surname><given-names>Vil D.</given-names></name><name xml:lang="ru"><surname>Ситдиков</surname><given-names>Виль Даянович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Physics and Mathematics), expert</p></bio><bio xml:lang="ru"><p>доктор физико-математических наук, эксперт</p></bio><email>SitdikovVD@bnipi.rosneft.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4618-412X</contrib-id><name-alternatives><name xml:lang="en"><surname>Khafizova</surname><given-names>Elvira D.</given-names></name><name xml:lang="ru"><surname>Хафизова</surname><given-names>Эльвира Динифовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), assistant professor of Chair of Materials Science and Physics of Metals, senior researcher at the Research Laboratory “Metals and Alloys under Extreme Impacts”</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент кафедры материаловедения и физики металлов, старший научный сотрудник НИЛ «Металлы и сплавы при экстремальных воздействиях»</p></bio><email>ela.90@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9774-1689</contrib-id><name-alternatives><name xml:lang="en"><surname>Polenok</surname><given-names>Milena V.</given-names></name><name xml:lang="ru"><surname>Поленок</surname><given-names>Милена Владиславовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>graduate student, laboratory assistant of the Research Laboratory “Metals and Alloys under Extreme Impacts”</p></bio><bio xml:lang="ru"><p>магистрант, лаборант НИЛ «Металлы и сплавы при экстремальных воздействиях»</p></bio><email>renaweiwei.179@mail.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">LLC RN-BashNIPIneft, Ufa</institution></aff><aff><institution xml:lang="ru">ООО «РН-БашНИПИнефть», Уфа</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Institute of Physics of Molecules and Crystals of Ufa Research Center of the RAS, Ufa</institution></aff><aff><institution xml:lang="ru">Институт физики молекул и кристаллов Уфимского научного центра РАН, Уфа</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Ufa University of Science and Technologies, Ufa</institution></aff><aff><institution xml:lang="ru">Уфимский университет науки и технологий, Уфа</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2023</year></pub-date><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>117</fpage><lpage>130</lpage><history><date date-type="received" iso-8601-date="2023-06-30"><day>30</day><month>06</month><year>2023</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/845">https://vektornaukitech.ru/jour/article/view/845</self-uri><abstract xml:lang="en"><p>In this paper, the authors consider the mechanisms of formation of high-strength states in the Zn–1%Li–2%Mg alloy as a result of its processing by the high pressure torsion (HPT) method. For the first time, the study showed that using HPT treatment, as a result of varying the degree of deformation at room temperature, it is possible to increase the ultimate strength of a zinc alloy from 155 to 383 MPa (with an increase in the yield stress from 149 to 306 MPa) without losing its ductility. To explain the reasons for the increase in the zinc alloy mechanical properties, its microstructure was analyzed by scanning electron microscopy (SEM), X-ray phase analysis (XPA), X-ray diffraction analysis (XRD), and small-angle X-ray scattering (SAXS). Using XPA, the authors established for the first time that Zn<sub>(eutectic)</sub>+β-LiZn<sub>4(eutectic)</sub>→~LiZn<sub>3</sub>+Zn<sub>(phase)</sub>+Zn<sub>(precipitation)</sub> and MgZn<sub>2</sub>→Mg<sub>2</sub>Zn<sub>11</sub> phase transformations occur in the zinc alloy during HPT treatment. SEM analysis showed that at the initial stages of HPT treatment, cylindrical Zn particles with a diameter of 330 nm and a length of up to 950 nm precipitate in β-LiZn<sub>3</sub> phase. At the same time, the SAXS method showed that needle-like LiZn<sub>4</sub> particles with a diameter of 9 nm and a length of 28 nm precipitate in the Zn phase. The study established that, only spherical Zn and LiZn<sub>4</sub> particles precipitate at high degrees of HPT treatment. Precision analysis of the zinc alloy microstructure showed that HPT treatment leads to grain refinement, an increase in the magnitude of crystal lattice microdistortion, a growth of the density of dislocations, which are predominantly of the edge type. As a result of the analysis of hardening mechanisms, the authors concluded that the increase in the zinc alloy strength characteristics mainly occurs due to grain-boundary, dislocation, and dispersion hardening.</p></abstract><trans-abstract xml:lang="ru"><p>В данной работе рассматриваются механизмы формирования высокопрочных состояний в сплаве Zn–1%Li–2%Mg в результате его обработки методом интенсивной пластической деформации кручением (ИПДК). Впервые показано, что методом ИПДК-обработки в результате варьирования степени деформации при комнатной температуре можно повысить значение предела прочности цинкового сплава со 155 до 383 МПа (с повышением предела текучести со 149 до 306 МПа), не теряя при этом его пластичности. Для объяснения причин повышения механических свойств цинкового сплава проведен анализ его микроструктуры методами растровой электронной микроскопии (РЭМ), рентгенофазового анализа (РФА), рентгеноструктурного анализа (РСА) и малоуглового рентгеновского рассеяния (МУРР). Впервые методом РФА установлено, что в цинковом сплаве при ИПДК-обработке реализуются Zn<sub>(эвтектика)</sub>+β-LiZn<sub>4(эвтектика)</sub>→~LiZn<sub>3</sub>+Zn<sub>(фаза)</sub>+Zn<sub>(выделение)</sub> и MgZn<sub>2</sub>→Mg<sub>2</sub>Zn<sub>11</sub> фазовые превращения. Методом РЭМ показано, что на начальных этапах ИПДК-обработки в β-LiZn<sub>3</sub> фазе выпадают частицы Zn цилиндрической формы диаметром 330 нм и длиной до 950 нм. При этом методом МУРР показано, что в фазе Zn выпадают частицы LiZn<sub>4</sub> игольчатой формы диаметром 9 нм и длиной 28 нм. Установлено, что при больших степенях ИПДК-обработки выделения Zn и LiZn<sub>4</sub> выпадают только сферической формы. Прецизионный анализ микроструктуры цинкового сплава показал, что ИПДК-обработка приводит к измельчению зерен, повышению величины микроискажения кристаллической решетки, росту плотности дислокаций, относящихся преимущественно к краевому типу. В результате анализа механизмов упрочнения сделан вывод о том, что повышение прочностных характеристик цинкового сплава в основном происходит за счет зернограничного, дислокационного и дисперсионного упрочнений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Zn–1%Li–2%Mg alloy</kwd><kwd>phase transformations in zinc alloy</kwd><kwd>severe plastic deformation</kwd><kwd>X-ray scattering methods</kwd><kwd>strength and plasticity</kwd><kwd>deformation mechanisms</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>сплав Zn–1%Li–2%Mg</kwd><kwd>фазовые переходы в цинковом сплаве</kwd><kwd>интенсивная пластическая деформация</kwd><kwd>методы рентгеновского рассеяния</kwd><kwd>прочность и пластичность</kwd><kwd>механизмы деформации</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research was supported by the grant of the Russian Science Foundation No. 23-29-00667, https://rscf.ru/project/23-29-00667. The paper was written on the reports of the participants of the XI International School of Physical Materials Science (SPM-2023), Togliatti, September 11–15, 2023.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 23-29-00667, https://rscf.ru/project/23-29-00667. Статья подготовлена по материалам докладов участников XI Международной школы «Физическое материаловедение» (ШФМ-2023), Тольятти, 11–15 сентября 2023 года.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Yang H., Jia B., Zhang Z., Qu X., Li G., Lin W., Zhu D., Dai K., Zheng Yu. Alloying design of biodegradable zinc as promising bone implants for load-bearing applications. Nature Communications, 2020, vol. 11, no. 1, article number 401. 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