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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">10.17073/0368-0797-2022-6-427-433</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2324</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>МАТЕРИАЛОВЕДЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Фрактография поверхности разрушения высокоэнтропийного сплава CrMnFeCoNi после электронно-пучковой обработки</article-title><trans-title-group xml:lang="en"><trans-title>Fractography of fracture surface of CrMnFeCoNi high-entropy alloy after electron-beam processing</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>Россия, 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, Russian Federation</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/0000-0003-0271-5504</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванов</surname><given-names>Ю. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>Yu. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юрий Федорович Иванов, д.ф.-м.н., профессор, Сибирский государственный индустриальный университет; главный научный сотрудник, Институт сильноточной электроники СО РАН</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p><p>Россия, 634055, Томск, пр. Академический, 2/3</p></bio><bio xml:lang="en"><p>Yurii F. Ivanov, Dr. Sci. (Phys.-Math.), Prof., Siberian State Industrial University; Chief Researcher, Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p><p>2/3 Akademicheskii Ave., Tomsk 634055, Russian Federation</p></bio><email xlink:type="simple">yufi55@mail.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 технологии металлов и авиационного материаловедения, Самарский национальный исследовательский университет им. академика С.П.  Королева, Сибирский государственный индустриальный университет</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p><p>Россия, 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, Samara National Research University, Siberian State Industrial University</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p><p>34 Moskovskoe Route, Samara 443086, Russian Federation</p></bio><email xlink:type="simple">kirilloss@yandex.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>Россия, 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, Russian Federation</p></bio><email xlink:type="simple">sparrow1981@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/0000-0002-1631-9644</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Панченко</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Panchenko</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Алексеевна Панченко, к.т.н., заведующая лабораторией электронной микроскопии и обработки изображений</p><p>Россия, 654007, Кемеровская обл. – Кузбасс, Новокузнецк, ул. Кирова, 42</p></bio><bio xml:lang="en"><p>Irina A. Panchenko, Cand. Sci. (Eng.), Head of the Laboratory of Elect­ron Microscopy and Image Processing</p><p>42 Kirova Str., Novokuznetsk, Kemerovo Region – Kuzbass 654007, Russian Federation</p></bio><email xlink:type="simple">i.r.i.ss@yandex.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>Сибирский государственный индустриальный университет; Институт сильноточной электроники СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University; Institute of High-Current Electronics, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет; Самарский национальный исследовательский университет им. академика С.П. Королева</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>2022</year></pub-date><pub-date pub-type="epub"><day>22</day><month>06</month><year>2022</year></pub-date><volume>65</volume><issue>6</issue><fpage>427</fpage><lpage>433</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Громов В.Е., Иванов Ю.Ф., Осинцев К.А., Воробьев С.В., Панченко И.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Громов В.Е., Иванов Ю.Ф., Осинцев К.А., Воробьев С.В., Панченко И.А.</copyright-holder><copyright-holder xml:lang="en">Gromov V.E., Ivanov Y.F., Osintsev K.A., Vorob’ev S.V., Panchenko I.A.</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/2324">https://fermet.misis.ru/jour/article/view/2324</self-uri><abstract><p>В последнее десятилетие внимание ученых в области физического материаловедения привлечено к изучению высокоэнтропийных сплавов. По технологии проволочно-дугового аддитивного производства (WAAM) получен высокоэнтропийный сплав (ВЭС) неэквиатомного состава. В двух состояниях (исходном/после изготовления и после электронно-пучковой обработки (ЭПО)) были проанализированы деформационные кривые, полученные на установке Instron 3369 при одноосном растяжении со скоростью 1,2 мм/мин при комнатной температуре. Электронно-пучковую обработку проводили с целью выявления ее влияния на структурно-фазовые состояния и механические свойства. Такая обработка приводит к снижению прочностных и пластических свойств ВЭС. С помощью сканирующего электронного микроскопа LEO EVO 50 выполнен анализ структуры поверхности разрушения и приповерхностной зоны. Выявлены зависимости предела прочности и относительного удлинения до разрушения от параметров ЭПО. Прочность и пластичность немонотонно снижаются с ростом плотности энергии пучка электронов в диапазоне 10 – 30 Дж/см2 при постоянных значениях длительности, частоты и количества импульсов. Наряду с ямочным характером излома выявлено наличие микропор, микрорасслоений. Исследование поверхности разрушения ВЭС после ЭПО кроме областей с вязким механизмом разрушения выявило области с полосовой (пластинчатой) структурой. При плотности энергии пучка электронов 10 Дж/см2 площадь такой структуры составляет 25 %, она немонотонно растет до 65 % при плотности энергии пучка электронов 30 Дж/см2. Диаметр ямок отрыва в полосах разрушения изменяется в пределах 0,1 – 0,2 мкм, что значительно меньше размера ямок отрыва остальной части образцов ВЭС. После ЭПО толщина расплавленного слоя изменяется в пределах 0,8 – 5,0 мкм и возрастает с ростом плотности энергии пучка электронов. Электронно-пучковая обработка приводит к образованию ячеек кристаллизации, размеры которых изменяются в пределах 310 – 800 нм при росте плотности энергии пучка электронов от 15 до 30 Дж/см2. Высказано предположение, что образующиеся при ЭПО дефекты в поверхностных слоях могут быть одной из причин снижения прочности и пластичности ВЭС.</p></abstract><trans-abstract xml:lang="en"><p>In the past decade the attention of scientists in the field of physical materials science is attracted to studying the high-entropy alloys. By the technology of wire-arc additive manufacturing (WAAM) a high-entropy alloy (HEA) of a nonequiatomic composition was obtained. Deformation curves obtained under uniaxial tension at a rate of 1.2 mm/min at room temperature using Instron 3369 unit were analyzed in two states: initial/after fabrication and after electron-beam processing (EBP). EBP was conducted to detect its influence on structural-phase states and mechanical properties. The EBP leads to a decrease in strength and plastic properties of the HEA. By means of scanning electron microscope LEO EVO 50, analysis of structure of fracture surface and the near-surface zone was performed. Dependences of the ultimate strength and relative elongation to failure on EBT parameters were revealed, and it was shown that values of strength and plasticity decrease nonmonotonically with an increase in electron beam energy density in the range ES = 10 – 30 J/cm2 at constant values of duration, frequency, and number of pulses. Along with a pit character of the fracture a presence of micropores and microlayering was detected. Investigation of the HEA’s fracture surface after EBP except for areas with a ductile fracture mechanism revealed the regions with a band (lamellar) structure. At ES = 10 J/cm2, the area of such structure is 25 %; it increases nonmonotonically to 65 % at ES = 30 J/cm2. The diameter of pits of detachment in fracture bands varies in the limits of 0.1 – 0.2 μm, which is considerably less than that in the remainder of the HEA samples. After EBP the thickness of the molten layer varies in the limits of 0.8 – 5.0 μm and grows with an increase in the energy density of electron beam. EBT leads to generation of crystallization cells, the sizes of which change within the range 310 – 800 nm as ES increases from 15 to 30 J/cm2. It is suggested that the defects being formed in surface layers in ЕВР may be the reason for decreasing the HEA’s maximum values of strength and plasticity.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>высокоэнтропийный сплав CrMnFeCoNi</kwd><kwd>электродуговая аддитивная технология</kwd><kwd>импульсный электронный пучок</kwd><kwd>испытания на растяжение</kwd><kwd>структура поверхности разрушения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>CrMnFeCoNi high-entropy alloy</kwd><kwd>wire arc additive manufacturing</kwd><kwd>pulsed electron-beam</kwd><kwd>tensile tests</kwd><kwd>fracture surface structure</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке гранта РНФ № 20-19-00452 (получение высокоэнтропийного сплава, проведение электронно-пучковой обработки и механических испытаний) и в рамках государственного задания (шифр темы 0809-2021-0013) (фрактография поверхности разрушения высокоэнтропийного сплава).</funding-statement><funding-statement xml:lang="en">The research was supported by the grant of the Russian Science Foundation (project No. 20-19-00452) (fabrication of the high-entropy alloy, electron-beam processing and conducting of the mechanical tests) and within the framework of the state assignment (subject code 0809-2021-0013) (fractography of the fracture surface of the high-entropy alloy).</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">George E.P., Curtin W.A., Tasan C.C. 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