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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">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2021-8-599-605</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2160</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>В ПОРЯДКЕ ДИСКУССИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>IN ORDER OF DISCUSSION</subject></subj-group></article-categories><title-group><article-title>Формирование улучшенных механических свойств высокоэнтропийного сплава Cantor</article-title><trans-title-group xml:lang="en"><trans-title>Generation of increased mechanical properties of Cantor high­entropy alloy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5147-5343</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Громов</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Gromov</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Виктор Евгеньевич Громов, д.ф.-м.н., профессор, заведующий кафедрой естественнонаучных дисциплин им. профессора В.М. Финкеля</p><p> 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42 </p></bio><bio xml:lang="en"><p>  Viktor E. Gromov, Dr. Sci. (Phys.-Math.), Prof., Head of the Chair of Science named after V.M. Finkel’</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007 </p></bio><email xlink:type="simple">gromov@physics.sibsiu.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/0000-0001-5677-1427</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Рубанникова</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Rubannikova</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Юлия Андреевна Рубанникова, аспирант кафедры естественнонаучных дисциплин им. профессора В.М. Финкеля</p><p> 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42 </p></bio><bio xml:lang="en"><p>  Yuliya A. Rubannikova, Postgraduate of the Chair of Science named after V.M. Finkel’</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007 </p><p> </p></bio><email xlink:type="simple">rubannikova96@mail.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/0000-0003-4809-8660</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коновалов</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Konovalov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Сергей Валерьевич Коновалов, д.т.н., заведующий кафедрой технологии металлов и авиационного материаловедения, профессор</p><p> 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42 </p><p> 443086, Самара, Московское шоссе, 34 </p></bio><bio xml:lang="en"><p>  Sergei V. Konovalov, Dr. Sci. (Eng.), Head of the Chair of Metals Technology and Aviation Materials, Prof.</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007 </p><p> 34 Moskovskoe Route, Samara 443086</p></bio><email xlink:type="simple">ksv@ssau.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/0000-0003-1150-6747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осинцев </surname><given-names>К. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Osintsev </surname><given-names>K. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Кирилл Александрович Осинцев, аспирант кафедры технологииметаллов и авиационного материаловедения</p><p> 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42 </p><p> 443086, Самара, Московское шоссе, 34 </p></bio><bio xml:lang="en"><p>  Kirill A. Osintsev, Postgraduate of the Chair of Metals Technology and Aviation Materials</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007 </p><p> 34 Moskovskoe Route, Samara 443086 </p></bio><email xlink:type="simple">osincev.ka@ssau.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3957-0249</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воробьев</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorob’ev</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> Сергей Владимирович Воробьев, д.т.н., старший научный сотрудник Управления научных исследований</p><p>  654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42 </p></bio><bio xml:lang="en"><p>  Sergei V. Vorob’ev, Dr. Sci. (Eng.), Senior Researcher of Department of Scientific Researches</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007 </p></bio><email xlink:type="simple">sparrow1981@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Самарский национальный исследовательский университет им.  академика С.П.  Королева; Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University;  Samara National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Самарский национальный исследовательский университет имени академика С.П.  Королева; Сибирский государственный индустриальный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University;  Samara National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>09</month><year>2021</year></pub-date><volume>64</volume><issue>8</issue><fpage>599</fpage><lpage>605</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Громов В.Е., Рубанникова Ю.А., Коновалов С.В., Осинцев  К.А., Воробьев С.В., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Громов В.Е., Рубанникова Ю.А., Коновалов С.В., Осинцев  К.А., Воробьев С.В.</copyright-holder><copyright-holder xml:lang="en">Gromov V.E., Rubannikova Y.A., Konovalov S.V., Osintsev  K.A., Vorob’ev S.V.</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://fermet.misis.ru/jour/article/view/2160">https://fermet.misis.ru/jour/article/view/2160</self-uri><abstract><p>Выполнен краткий обзор публикаций последних лет отечественных и зарубежных исследователей по изучению возможностей улучшения механических свойств пятикомпонентного высокоэнтропийного сплава (ВЭС) Cantor различного фазового состава в широком диапазоне температур. Этот один из первых, созданных эквимолярных ВЭС с ГЦК структурой несмотря на высокую ударную вязкость и повышенное сопротивление ползучести нуждается в улучшении механических свойств ввиду возможных областей использования. Отмечено, что создание бимодального распределения зерен по размерам путем интенсивной пластической деформации кручением при высоком давлении 7,8 ГПа литого сплава и последующего кратковременного отжига при 873 и 973 К способно значительно изменить прочностные и пластические свойства. Для полученного методом магнетронного распыления ВЭС и последующего отжига при 573 К достигался наноразмерный масштаб зерен, окруженных аморфной оболочкой. В таком двухфазном сплаве нанотвердость составляла 9,44 ГПа, а модуль упругости 183 ГПа. Используя эффект пластичности, индуцированной фазовым превращением в сплаве (CrMnFeCoNi)50Fe50, полученном методом лазерной аддитивной технологии, достигался предел прочности 415 – 470 МПа при высоком уровне пластичности до 77 %. Это обеспечивалось бездиффузионным ГЦК → ОЦК превращением. Показано, что различие в виде механизмов пластической деформации литого сплава при 77 и 293 К (дислокационное скольжение и двойникование) определяет комбинацию повышенных свойств прочность – пластичность. Предварительно продеформированные при 77 К образцы для формирования нанодвойников при последующем нагружении при 293 К проявляют повышенную прочность и пластичность по сравнению с недеформированными. Для ВЭС, полученного по лазерной аддитивной технологии, также справедлив этот путь повышения свойств. Отмечен путь улучшения механических свойств за счет электронно­пучковой обработки. Обращено внимание на необходимость учета роли энтропии, искажений кристаллической решетки, ближнего порядка, слабой диффузии и «коктейль» эффекта в анализе механических свойств.</p></abstract><trans-abstract xml:lang="en"><p>The article considers a brief review of the last years of Russian and foreign research on the possibilities of improving mechanical properties of the Cantor quinary high­entropy alloy (HEA) with diﬀerent phase composition in wide temperature range. The alloy, one of the frst created equimolar HEAs with FCC structure, needs mechanical properties improvement in accordance with possible felds of application in spite of its high impact toughness and increased creep resistance. It has been noted that bimodal distribution of the grains by sizes under severe plastic torsional strain at high pressure of 7.8 GPa of cast alloy and subsequent short­time annealing at 873 and 973 K can change strength and plastic properties. Nanodimensional scale of the grains surrounded by amorphous envelope has been obtained for HEA produced by the method of magnetron sputtering and subsequent annealing at 573 K. In such a two­phase alloy nanohardness amounted to 9.44 GPa and elasticity modulus – to 183 GPa. Using plasticity eﬀect induced by phase transformation in (CrMnFeCoNi)50Fe50 alloy obtained by the method of laser additive technology the ultimate strength of 415 – 470 MPa has been reached at high level of plasticity up to 77 %. It has been ensured by FCC → BCC diﬀusionless transformation. It is shown that diﬀerence in mechanisms of plastic strain of cast alloy at 77 K and 293 K (dislocation glide and twinning) determines a combination of increased “strength­plasticity” properties. Samples for generation of twins prestrained at 77 K exhibit increased strength and plasticity under subsequent loading at 293 K in comparison with the unstrained ones. For HEA obtained by laser additive technology this way of increasing properties is also true. The way of improving mechanical properties at the expense of electron beam processing is noted. The attention is paid to the necessity of taking into account the role of entropy, crystal lattice distortions, short­range order, weak diﬀusion and “cocktail” eﬀect in the analysis of mechanical properties.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплав Cantor</kwd><kwd>механические свойства</kwd><kwd>механизмы деформации</kwd><kwd>структура</kwd><kwd>фазовый состав</kwd><kwd>распределение зерен</kwd><kwd>двойники</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Cantor alloy</kwd><kwd>mechanical properties</kwd><kwd>mechanisms of strain</kwd><kwd>structure</kwd><kwd>phase composition</kwd><kwd>grain distribution</kwd><kwd>twins</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке гранта Российского научного фонда (проект № 20­19­00452)</funding-statement><funding-statement xml:lang="en">The research was supported by the grant of the Russian Science Foundation (project No. 20­19­00452)</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">Yeh J.W. 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