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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">10.17073/0368-0797-2022-11-786-797</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2432</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>МЕТАЛЛУРГИЧЕСКИЕ ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>METALLURGICAL TECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Разработка температурно-скоростных режимов горячей деформации сплава Co – 28Cr – 6Mo на основе карт пластичности</article-title><trans-title-group xml:lang="en"><trans-title>Development of temperature-speed modes of hot deformation of Co – 28Cr – 6Mo alloy based on processing maps</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6654-4236</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гамин</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Gamin</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Владимирович Гамин, к.т.н., доцент кафедры «Обработка металлов давлением»</p><p>Россия, 119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Yurii V. Gamin, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Metal Forming”</p><p>4 Leninskii Ave., Moscow 119049, Russian Federation</p></bio><email xlink:type="simple">y.gamin@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/0000-0002-7276-0119</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Коротицкий</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Korotitskii</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Викторович Коротицкий, к.ф.-м.н., старший научный сотрудник лаборатории «Ультрамелкозернистые металлические материалы»</p><p>Россия, 119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Andrei V. Korotitskii, Cand. Sci. (Phys.-Math.), Senior Researcher of the Laboratory “Ultrafine-Grained Metal Materials”</p><p>4 Leninskii Ave., Moscow 119049, Russian Federation</p></bio><email xlink:type="simple">akorotitskiy@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7730-6700</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кин</surname><given-names>Т. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kin</surname><given-names>T. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Юрьевна Кин, аспирант кафедры «Обработка металлов давлением»</p><p>Россия, 119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Tat’yana Yu. Kin, Postgraduate of the Chair “Metal Forming”</p><p>4 Leninskii Ave., Moscow 119049, Russian Federation</p></bio><email xlink:type="simple">tatianakin@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/0000-0002-0853-3966</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Галкин</surname><given-names>С. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Galkin</surname><given-names>S. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Павлович Галкин, д.т.н., профессор кафедры «Обработка металлов давлением»</p><p>Россия, 119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Sergei P. Galkin, Dr. Sci. (Eng.), Prof. of the Chair “Metal Forming”</p><p>4 Leninskii Ave., Moscow 119049, Russian Federation</p></bio><email xlink:type="simple">glk-omd@yandex.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>Костин</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kostin</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Алексеевич Костин, директор по развитию</p><p>Россия, 115516, Москва, Покровка, 33</p></bio><bio xml:lang="en"><p>Sergei A. Kostin, Director of Development</p><p>33 Pokrovka Str., Moscow 115516, Russian Federation</p></bio><email xlink:type="simple">kostin@ezks.ru</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>Тихомиров</surname><given-names>Е. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Tikhomirov</surname><given-names>E. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Евгений Олегович Тихомиров, магистр кафедры «Обработка металлов давлением»</p><p>Россия, 119049, Москва, Ленинский пр., 4</p></bio><bio xml:lang="en"><p>Evgenii O. Tikhomirov, Master Student of the Chair “Metal Forming”</p><p>4 Leninskii Ave., Moscow 119049, Russian Federation</p></bio><email xlink:type="simple">tikhomirov.evgenij@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский технологический университет «МИСиС»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National University of Science and Technology “MISIS”</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>АО «Завод Качественных Сплавов»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>JSC “Plant of Quality Alloys”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>22</day><month>11</month><year>2022</year></pub-date><volume>65</volume><issue>11</issue><fpage>786</fpage><lpage>797</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гамин Ю.В., Коротицкий А.В., Кин Т.Ю., Галкин С.П., Костин С.А., Тихомиров Е.О., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Гамин Ю.В., Коротицкий А.В., Кин Т.Ю., Галкин С.П., Костин С.А., Тихомиров Е.О.</copyright-holder><copyright-holder xml:lang="en">Gamin Y.V., Korotitskii A.V., Kin T.Y., Galkin S.P., Kostin S.A., Tikhomirov E.O.</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/2432">https://fermet.misis.ru/jour/article/view/2432</self-uri><abstract><p>Проведены испытания сплава медицинского назначения Co – 28Cr – 6Mo после гомогенизации на одноосное сжатие при температурах 1000, 1100 и 1200 °С и скоростях деформации 1, 10 и 50 с–1 с использованием установки Gleeble System 3800. Получены кривые сопротивления деформации, описывающие деформационное поведение сплава. С использованием трех моделей (степенной, экспоненциальной и функции гиперболического синуса), описывающих напряжение течения, выполнены расчеты параметров горячей деформации (энергия активации, параметр Зенера-Холломона). Наиболее высокую степень сходимости показали результаты расчета, проведенного на основе степенной функции и функции гиперболического синуса. Данные модели могут быть использованы для точных расчетов напряжения течения при заданных параметрах температуры и скорости деформации, или для моделирования процесса деформации. Также на основе карт пластичности выполнена разработка деформационно-скоростных режимов горячей деформации сплава Co – 28Cr – 6Mo, что позволит в дальнейшем выбрать оптимальные режимы прокатки. Согласно полученным данным, благоприятные температурно-скоростные условия для осуществления горячей деформации смещаются по мере накопления деформации в область высоких температур и малых скоростей деформации. При этом крайне неблагоприятная зона с отрицательными значениями критерия стабильности пластического течения ξ, появляющаяся при значениях показателя деформации e = 0,3 – 0,4, продолжает довольно существенно расти с увеличением деформационного воздействия. Горячую деформацию сплава Co – 28Cr – 6Mo при малых степенях обжатия (e &lt; 0,2) целесообразнее выполнять при температурах более 1150 °С и скоростях деформации не менее 20 с–1. С ростом степени деформации необходимо выбирать более низкие скорости деформации (1 – 5 с–1) и более высокую температуру деформации. </p></abstract><trans-abstract xml:lang="en"><p>In the article, the tests of the medical alloy Co – 28Cr – 6Mo after homogenization for uniaxial compression at temperatures of 1000, 1100 and 1200 °C and strain rates of 1, 10, and 50 s­–1 were carried out using the Gleeble System 3800. The stress-strain curves describing the alloy deformation behavior were obtained. The calculations of hot deformation parameters (activation energy, Zener-Hollomon parameter) were performed using three models (power-law, exponential, and hyperbolic sine function) describing the flow stress. The highest degree of convergence was shown by the calculation results based on the power function and the hyperbolic sine function. These models can be used to accurately calculate the flow stress at given temperature and strain rate parameters, or to simulate the deformation process. Also, based on processing maps, the authors developed the deformation-speed modes of hot deformation of the Co – 28Cr – 6Mo alloy. It will make it possible to choose the optimal rolling modes in the future. According to the data obtained, favorable temperature-speed conditions for hot deformation are shifted as deformation accumulates to the region of high temperatures and low strain rates. At the same time, the extremely unfavorable zone with negative values of the ξ-criterion, which appears at e = 0.3 – 0.4, continues to grow quite significantly with an increase in the deformation effect. Hot deformation of the Co – 28Cr – 6Mo alloy at low compression ratios (e &lt; 0.2) is more expedient to perform at temperatures above 1150 °C and strain rates of at least 20 s–1. With an increase in deformation degree, it is necessary to choose lower strain rates (1 – 5 s–1) and higher deformation temperature.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>сплав Co – Cr – Mo</kwd><kwd>пластическая деформация</kwd><kwd>реологические свойства</kwd><kwd>параметр Зенера-Холломона</kwd><kwd>карты пластичности</kwd><kwd>режим деформации</kwd><kwd>скорость деформации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Co – Cr – Mo alloy</kwd><kwd>plastic deformation</kwd><kwd>rheological properties</kwd><kwd>Zener-Hollomon parameter</kwd><kwd>processing maps</kwd><kwd>deformation mode</kwd><kwd>strain rate</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Dobbs H.S., Robertson J.L.M. Heat treatment of cast Co-Cr-Mo for orthopedic implant use // Journal of Materials Science. 1983. Vol. 18. 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