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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">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ МИСИС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2022-4-67-74</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1395</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>Литейное производство</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Foundry</subject></subj-group></article-categories><title-group><article-title>Исследование структуры и свойств наплавленных зон из присадочной проволоки Св-АК5 при роботизированной наплавке</article-title><trans-title-group xml:lang="en"><trans-title>Effect of the structure and properties of welded zones made of Sv-AK5 welding wire at robotic surfacing</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>Никитин</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф., декан факультета машиностроения, металлургии и транспорта</p><p>443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Prof., Dean of the Faculty of mechanical engineering, metallurgy and transport</p><p>443100, Russia, Samara, Molodogvardeskaya str., 244</p></bio><email xlink:type="simple">kvn-6411@mail.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>Дунаев</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dunaev</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, инженер кафедры литейных и высокоэффективных технологий</p><p>443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Postgraduate student, Engineer of the Department of foundry and high-efficiency technologies</p><p>443100, Russia, Samara, Molodogvardeskaya str., 244</p></bio><email xlink:type="simple">dimjkee830@gmail.com</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>Жаткин</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhatkin</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, профессор кафедры литейных и высокоэффективных технологий</p><p>443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Professor of the Department of foundry and high-efficiency technologies</p><p>443100, Russia, Samara, Molodogvardeskaya str., 244</p></bio><email xlink:type="simple">sergejat@mail.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>Никитин</surname><given-names>В. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitin</surname><given-names>V. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф., зав. кафедрой литейных и высокоэффективных технологий</p><p>443100, г. Самара, ул. Молодогвардейская, 244</p></bio><bio xml:lang="en"><p>Nikitin V.I. – Dr. Sci. (Eng.), Prof., Head of the Department of foundry and high-efficiency technologies</p><p>443100, Russia, Samara, Molodogvardeskaya str., 244</p></bio><email xlink:type="simple">tlp@samgtu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский государственный технический университет (СамГТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara State Technical University (SSTU)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>19</day><month>08</month><year>2022</year></pub-date><volume>28</volume><issue>4</issue><fpage>67</fpage><lpage>74</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Никитин К.В., Дунаев Д.А., Жаткин С.С., Никитин В.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Никитин К.В., Дунаев Д.А., Жаткин С.С., Никитин В.И.</copyright-holder><copyright-holder xml:lang="en">Nikitin K.V., Dunaev D.A., Zhatkin S.S., Nikitin V.I.</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://cvmet.misis.ru/jour/article/view/1395">https://cvmet.misis.ru/jour/article/view/1395</self-uri><abstract><p>Исследовано влияние тока сварочной дуги (47, 57 и 67 А) на структуру и свойства наплавленных образцов, получаемых электродуговой роботизированной наплавкой. В качестве присадочного материала использовали сварочную проволоку Св-АК5 (ER4043) системы Al–Si. Наплавку проводили на субстрат в виде плиты толщиной 6 мм из сплава АМг6 системы Al–Mg. При наплавке в образцах формируется типичная двухфазная структура доэвтектического состава, характерная для сплавов системы Al–Si, с содержанием кремния 5 %. По высоте наплавленных слоев отмечается тенденция к укрупнению структуры по направлению от субстрата, что связано с аккумуляцией теплоты в наплавляемых по высоте слоях. С увеличением тока сварочной дуги происходит измельчение дендритов на основе α-Al и кристаллов эвтектического кремния, а также возрастает плотность и падает микротвердость наплавленных образцов. Повышение плотности обусловлено снижением доли и размеров газовых пор, а также измельчением структурных составляющих. Уменьшение микротвердости связано с увеличением доли мягкой фазы (дендритов α-Al) и сокращением количества твердых кристаллов эвтектического кремния. Среднее содержание кремния в образцах, наплавленных по трем режимам, находится в интервале 5,46–5,91 %, что соответствует химическому составу сварочной проволоки марки Св-АК5 (ER4043). Увеличение тока сварочной дуги способствует росту значений предела прочности при растяжении и незначительному снижению условного предела текучести и относительного удлинения. Особенности изменения механических свойств наплавленных образцов обусловлены спецификой формирования литой структуры наплавляемых слоев в условиях направленного затвердевания по направлению от субстрата.</p></abstract><trans-abstract xml:lang="en"><p>The study covers the effect of welding arc current (47, 57, and 67 A) on the structure and properties of deposited samples obtained by robotic electric arc surfacing. Sv-AK5 (ER4043) welding wire of the Al-Si system was used as a filler material. Surfacing was carried out on a substrate in the form of a 6 mm thick plate made of AMg6 alloy (Al-Mg system). During surfacing, a typical two-phase structure of a hypoeutectic composition is formed in samples typical for Al–Si alloys with a silicon content of 5 %. Along the height of deposited layers, there is a tendency to structure enlargement in the direction from the substrate, which is associated with the accumulation of heat in layers deposited along the height. As welding arc current increases, α-Al-based dendrites and eutectic silicon crystals are refined with an increase in the density and a decrease in the microhardness of deposited samples. The increase in density is due to the reduced proportion and size of gas pores, as well as refined structural components. The decrease in microhardness is associated with the increased proportion of the soft phase (α-Al dendrites) and decreased quantity of hard eutectic silicon crystals. The average content of silicon in samples deposited in three modes is in the range of 5.46–5.91%, which corresponds to the chemical composition of Sv-AK5 (ER4043) welding wire. Higher welding arc current contributes to an increase in the tensile strength and a slight decrease in the offset yield strength and relative elongation. The features of changes in the mechanical properties of deposited samples are determined by of the specific cast structure of deposited layers formed under conditions of directional solidification in the direction from the substrate.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аддитивные технологии</kwd><kwd>электродуговая наплавка</kwd><kwd>роботизированная наплавка</kwd><kwd>алюминиевые сплавы</kwd><kwd>микроструктура</kwd><kwd>микротвердость</kwd><kwd>механические свойства</kwd></kwd-group><kwd-group xml:lang="en"><kwd>additive technologies</kwd><kwd>electric arc surfacing</kwd><kwd>robotic surfacing</kwd><kwd>aluminum alloys</kwd><kwd>microstructure</kwd><kwd>microhardness</kwd><kwd>mechanical properties</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Минобрнауки РФ в рамках проектной части государственного задания № 0778-2020-0005</funding-statement><funding-statement xml:lang="en">The research was funded by the Ministry of Education and Science as part the project part of Government Task № 0778-2020-0005</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">Huang S., Liu P., Mokasdar A., Hou L. 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