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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">551</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2022-3-1-23-32</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">Hardening mechanisms contribution at nonmonotonic change of properties in the Cu–0.6Cr–0.1Zr alloy at high pressure torsion</article-title><trans-title-group xml:lang="ru"><trans-title>Вклад механизмов упрочнения при немонотонном изменении свойств в сплаве Cu–0,6Cr–0,1Zr при кручении под высоким давлением</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2652-2646</contrib-id><name-alternatives><name xml:lang="en"><surname>Aksenov</surname><given-names>Denis A.</given-names></name><name xml:lang="ru"><surname>Аксенов</surname><given-names>Денис Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>junior researcher</p></bio><bio xml:lang="ru"><p>младший научный сотрудник<italic> </italic></p></bio><email>aksyonovda@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Faizova</surname><given-names>Svetlana N.</given-names></name><name xml:lang="ru"><surname>Фаизова</surname><given-names>Светлана Никитична</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Physics and Mathematics), assistant professor of Chair of General and Theoretical Physics, assistant professor of Chair of Water Supply and Disposal</p></bio><bio xml:lang="ru"><p>кандидат физико-математических наук, доцент кафедры общей и теоретической физики, доцент кафедры водоснабжения и водоотведения</p></bio><email>snfaiz@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Faizov</surname><given-names>Ilshat A.</given-names></name><name xml:lang="ru"><surname>Фаизов</surname><given-names>Ильшат Альбертович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Physics and Mathematics), chief specialist</p></bio><bio xml:lang="ru"><p>кандидат физико-математических наук, главный специалист</p></bio><email>iafaiz@mail.ru</email><xref ref-type="aff" rid="aff5"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Physics of Molecules and Crystals of Ufa Federal Research Center of the Russian Academy of Sciences, Ufa</institution></aff><aff><institution xml:lang="ru">Институт физики молекул и кристаллов Уфимского научного центра Российской академии наук, Уфа</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Ufa State Aviation Technical University, Ufa</institution></aff><aff><institution xml:lang="ru">Уфимский государственный авиационный технический университет, Уфа</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Sterlitamak branch of Bashkir State University, Sterlitamak</institution></aff><aff><institution xml:lang="ru">Стерлитамакский филиал Башкирского государственного университета, Стерлитамак</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Ufa State Petroleum Technological University, Ufa</institution></aff><aff><institution xml:lang="ru">Уфимский государственный нефтяной технический университет, Уфа</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">RN-BashNIPIneft LLC, Ufa</institution></aff><aff><institution xml:lang="ru">ООО «РН-БашНИПИнефть», Уфа</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2022</year></pub-date><issue>3-1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>23</fpage><lpage>32</lpage><history><date date-type="received" iso-8601-date="2022-09-30"><day>30</day><month>09</month><year>2022</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/551">https://vektornaukitech.ru/jour/article/view/551</self-uri><abstract xml:lang="en"><p>Phase transformations play an important role in the formation of properties in the dispersion-hardened alloys, for example, such as the Cu–Cr–Zr system alloys. It is known that under severe plastic deformation, the diffusion conditions change significantly, which leads to a change in the phase transformation kinetics. In this work, the authors studied the Cu–0.6Cr–0.1Zr alloy in the low concentration solid solution state subjected to high pressure torsion (up to 10 cycles). In this case, due to the solid solution low concentration and the formed ensemble of large particles, the process of solid solution decomposition was excluded at the first stages. The preliminary work on the analysis of such structurally sensitive characteristics as electrical conductivity and lattice parameter made it possible to identify the nonmonotonic nature of a change in the alloying elements concentration in the solid solution during HPT. Nonmonotonicity is related to the significant changes in the characteristics of the second phase particles ensemble under the influence of high voltages. Such significant structural changes are reflected in the nature of the mechanical characteristics change. The authors identified that when increasing the number of HPT revolutions, changes in strength also have a nonmonotonic nature, which corresponds to the nonmonotonic nature of changes in the concentration of alloying elements and electrical conductivity. Various contributions to the Cu–0.6Cr–0.1Zr alloy hardening were analyzed. The analysis identified that the dispersion strengthening contribution plays the main role in the nonmonotonic change in the mechanical characteristics. The calculated data correlate with the obtained experimental results.</p></abstract><trans-abstract xml:lang="ru"><p>Фазовые превращения играют важную роль в формировании свойств в дисперсионно-упрочняемых сплавах, таких, например, как сплавы системы Cu–Cr–Zr. Известно, что в условиях интенсивной пластической деформации диффузионные условия существенно меняются, что приводит к изменению кинетики фазовых превращений. В работе изучался сплав Cu–0,6Cr–0,1Zr в состоянии с низкой концентрацией твердого раствора, подверженный кручению под высоким давлением (КВД) (до 10 циклов). При этом за счет низкой концентрации твердого раствора и сформированного ансамбля крупных частиц на первых этапах исключался процесс распада твердого раствора. Предварительная работа по анализу таких структурно-чувствительных характеристик, как электропроводность и параметр решетки, позволила установить немонотонный характер изменения концентрации легирующих элементов в твердом растворе в процессе КВД. Немонотонность связана с существенными изменениями характеристик ансамбля частиц вторых фаз под влиянием высоких напряжений. Столь существенные структурные изменения находят свое отражение в характере изменения механических характеристик. Установлено, что изменения прочности с увеличением числа оборотов КВД имеют также немонотонный характер, который соответствует немонотонному характеру изменения концентрации легирующих элементов и электропроводности. Проведен анализ различных вкладов в упрочнение сплава Cu–0,6Cr–0,1Zr. Установлено, что основную роль в немонотонном изменении механических характеристик играет вклад дисперсионного упрочнения. Расчетные данные коррелируют с полученными экспериментальными результатами.</p></trans-abstract><kwd-group xml:lang="en"><kwd>strength</kwd><kwd>copper alloys</kwd><kwd>high pressure torsion</kwd><kwd>electrical conductivity</kwd><kwd>phase transformations</kwd><kwd>Cu–0.6Cr–0.1Zr</kwd><kwd>severe plastic deformation</kwd><kwd>equal channel angular pressing</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>прочность</kwd><kwd>медные сплавы</kwd><kwd>кручение под высоким давлением</kwd><kwd>электропроводность</kwd><kwd>фазовые превращения</kwd><kwd>Cu–0</kwd><kwd>6Cr–0</kwd><kwd>1Zr</kwd><kwd>интенсивная пластическая деформация</kwd><kwd>равноканальное угловое прессование</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Edalati K., Bachmaier A., Beloshenko V.A., Beygelzimer Y., Blank V.D., Botta W.J., Bryła K., Čížek J., Divinski S.V., Enikeev N., Estrin Yu., Faraji G., Figueiredo R.B., Fuji M., Furuta T., Thierry G., Gubicza J., Hohenwarter A., Leoben M., Horita Z., Huot J., Ikoma Y., Janeček M., Kawasaki M., Král P., Kuramoto Sh., Langdon T.G., Leiva D., Levitas V.I., Mazilkin A., Mito M., Miyamoto H., Nishizaki T., Pippan R., Popov V., Popova E.N., Purcek G., Renk O., Révész A., Sauvage X., Sklenička V., Skrotzki W., Straumal B.B., Suwas S., Toth L.S., Tsuji N., Valiev R.Z., Wilde G., Zehetbauer M.J., Zhu X. 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