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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">10.17073/0368-0797-2015-10-769-774</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-746</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 И НАНОТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE AND NANOTECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>ФОРМИРОВАНИЕ ИЗНОСОСТОЙКИХ ПОВЕРХНОСТНЫХ СЛОЕВ НАПЛАВКОЙ</article-title><trans-title-group xml:lang="en"><trans-title>FORMATION OF WEAR-RESISTANT WELD SURFACE LAYERS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Райков</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Raikov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры физики им. В.М. Финкеля</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Physics named after V.M. Finkel</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><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>д.т.н., профессор кафедры физики им. В.М. Финкеля</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Chair of Physics named after V.M. Finkel</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капралов</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapralov</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры физики им. В.М. Финкеля</p></bio><bio xml:lang="en"><p>Postgraduate of the Chair of Physics named after V.M. Finkel</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Будовских</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Budovskikh</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры физики им. В.М. Финкеля</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Chair of Physics named after V.M. Finkel</p></bio><email xlink:type="simple">budovskih_ea@physics.sibsiu.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>Целлермаер</surname><given-names>В. Я.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsellermaer</surname><given-names>V. Ya.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры теплогазоводоснабжения, водоотведения и вентиляции</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Chair of Heat-gas-water Supply, Water Disposal and Ventilation</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский государственный индустриальный университет (654007, Россия, Новокузнецк, Кемеровская обл., ул. Кирова, 42)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>28</day><month>11</month><year>2015</year></pub-date><volume>58</volume><issue>10</issue><fpage>769</fpage><lpage>774</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Райков С.В., Коновалов С.В., Капралов Е.В., Будовских Е.А., Целлермаер В.Я., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Райков С.В., Коновалов С.В., Капралов Е.В., Будовских Е.А., Целлермаер В.Я.</copyright-holder><copyright-holder xml:lang="en">Raikov S.V., Konovalov S.V., Kapralov E.V., Budovskikh E.A., Tsellermaer V.Y.</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/746">https://fermet.misis.ru/jour/article/view/746</self-uri><abstract><p>Защитное покрытие на низколегированной стали Hardox 400 наплавляли с использованием порошковой проволоки SK A 70-G электродуговым методом. Такие покрытия эффективно работают в условиях сильного абразивного изнашивания и ударных нагрузок и применяются в различных областях промышленности. Методами сканирующей электронной микроскопии c рентгеноспектральным микроанализом и рентгеновского фазового анализа изучен химический и фазовый составы, а также состояние дефектной субструктуры покрытия. По морфологическому признаку в покрытиях выделяются три слоя. Поверхностный слой толщиной 3,5 мм имеет преимущественно структуру ячеистой кристаллизации и характеризуется присутствием ограненных частиц, обогащенных ниобием. Промежуточный слой (до 0,4 мм) имеет структуру островкового типа. Переходный слой (до 0,02 мм), непосредственно примыкающий к границе раздела с подложкой, характеризуется столбчатой и дендритной структурой. Зона термического влияния имеет общую толщину 4 мм. Установлено, что износостойкость покрытий в 2,3 раза выше, чем у подложки. Это обусловлено формированием субмикроразмерной структуры кристаллизации, выделением большого количества высокопрочных частиц упрочняющих фаз, а также формированием мартенситной структуры α-фазы покрытия. Упрочняющими фазами являются Fe3C, объемная доля которого составляет 10 %, карбиды ниобия и хрома состава NbC и Cr3C2 , суммарная объемная доля которых 20 %, и борид железа состава Fe3B, объемная доля которого 10 %.</p></abstract><trans-abstract xml:lang="en"><p>The protective coating on low-alloy steels Hardox 400 has been welded by electric arc method using the fl ux cored wire SK A 70-G. Such coating works effectively in conditions of strong abrasive wear and shock loads and is used in various industries. Chemical and phase composition and defect substructure condition of the coatings has been investigated using scanning electron microscopy with EDA-technique and x-ray phase analysis. The coatings can be divided in three layers by morphological features. The surface layer with the thickness of 3.5 mm has the property cellular structure crystallization and can be characterized by the presence of faceted particles enriched in niobium. The intermediate layer (0.4 mm) has the structure of an islet type. Transition layer (to 0.02 mm) adjacent to the interface with the substrate, is characterized by columnar and dendritic structure. Heat-affected zone has a total thickness of 4 mm. It has been established that the wear resistance of the coatings is in 2.3 times higher than of the substrate. This is due to the formation of the submicrodimensional structure of crystallization, the release of large amounts of high strength particles of hardening phases and forming a martensitic structure of the α-phase of the coating. The reinforcing phases are Fe3C, the volume fraction of which is 10 %, the carbides of niobium and chromium NbC and Cr3C2 , with total volume fraction of 20 %, and iron boride Fe3B, with volume fraction of 10 %.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наплавка</kwd><kwd>порошковая проволока</kwd><kwd>низколегированная сталь</kwd><kwd>износостойкость</kwd><kwd>структура кристаллизации</kwd><kwd>химический состав</kwd><kwd>фазовый состав</kwd><kwd>карбиды</kwd><kwd>бориды</kwd></kwd-group><kwd-group xml:lang="en"><kwd>surfacing</kwd><kwd>flux-cored wire</kwd><kwd>low-alloy steel</kwd><kwd>wear resistance</kwd><kwd>structure of crystallization</kwd><kwd>chemical composition</kwd><kwd>phase composition</kwd><kwd>carbides</kwd><kwd>borides</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">Sosnin N.A., Ermakov S.A., Topolyanskii P.A. Plazmennye tekhnologii. 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