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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">10.17073/0368-0797-2019-3-222-227</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1634</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>ЭКОЛОГИЯ И РАЦИОНАЛЬНОЕ ПРИРОДОПОЛЬЗОВАНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ECOLOGY AND RATIONAL USE OF NATURAL RESOURCES</subject></subj-group></article-categories><title-group><article-title>ИСПОЛЬЗОВАНИЕ ВЫСОКОТЕМПЕРАТУРНОЙ ОБРАБОТКИ РАСПЛАВА ДЛЯ ПЕРЕРАБОТКИ ЛИТЕЙНЫХ ОТХОДОВ ЖАРОПРОЧНОГО СПЛАВА</article-title><trans-title-group xml:lang="en"><trans-title>USING MELT HIGH-TEMPERATURE TREATMENT FOR PROCESSING FOUNDRY WASTES OF HEAT-RESISTANT ALLOY</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>Тягунов</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Тyagunov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., заведующий кафедрой полиграфии и веб-дизайна</p><p>620002, Россия, Екатеринбург, ул. Мира, 28</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor, Head of the Chair of Printing and Web-Design</p><p>Ekaterinburg</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>Барышев</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Baryshev</surname><given-names>Е. Е.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., заведующий кафедрой безопасности жизнедеятельности</p><p>620002, Россия, Екатеринбург, ул. Мира, 28</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Assist. Professor, Leading Researcher, Head of the Chair of Life Safety </p><p>Ekaterinburg</p></bio><email xlink:type="simple">e.e.baryshev@urfu.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>Тягунов</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tyagunov</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.т.н., профессор кафедры безопасности жизнедеятельности</p><p>620002, Россия, Екатеринбург, ул. Мира, 28</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), Professor of the Chair of Life Safety</p><p>Ekaterinburg</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>Костина</surname><given-names>Т. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Кostina</surname><given-names>Т. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры физики</p><p>620002, Россия, Екатеринбург, ул. Мира, 28</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Physics</p><p>Ekaterinburg</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>Шмакова</surname><given-names>К. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Shmakova</surname><given-names>K. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.т.н., доцент кафедры физики</p><p>620002, Россия, Екатеринбург, ул. Мира, 28</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair of Physics</p><p>Ekaterinburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет им. первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the first President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>19</day><month>06</month><year>2019</year></pub-date><volume>62</volume><issue>3</issue><fpage>222</fpage><lpage>227</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тягунов А.Г., Барышев Е.Е., Тягунов Г.В., Костина Т.К., Шмакова К.Ю., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Тягунов А.Г., Барышев Е.Е., Тягунов Г.В., Костина Т.К., Шмакова К.Ю.</copyright-holder><copyright-holder xml:lang="en">Тyagunov A.G., Baryshev Е.Е., Tyagunov G.V., Кostina Т.K., Shmakova K.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/1634">https://fermet.misis.ru/jour/article/view/1634</self-uri><abstract><p>В настоящее время при производстве металлургических сплавов все больше используются металлургические отходы. Накапливание объема и повышение возраста возврата влияет на загрязненность шихты нежелательными элементами и неметаллическими включениями, что неизбежно приводит к резкому ухудшению структуры и свойств отливки. Данное обстоятельство сказывается на характере политерм физических свойств расплава и, соответственно, необходимых температурно-временных параметрах плавки жаропрочного сплава. В работе изучены температурные зависимости удельного электросопротивления, кинематической вязкости и поверхностного натяжения жидких жаропрочных композиций на основе системы Ni – Nb – Cr – Mo. Для сплава ЭП902 установлены критические температуры, нагрев до которых приводит к необратимым интенсивным изменениям в направлении улучшения состояния расплава. Обнаружена взаимосвязь между количеством литейных отходов в шихте с видом и особенностями температурных зависимостей физико-химических свойств расплава. Показано, что увеличение количества литейных отходов при переплаве приводит к повышению критических температур. Изучено влияние состояния расплава на процесс кристаллизации и структуру твердого металла. Процесс затвердевания сплава ЭП902 исследован методом дифференциального термического анализа. Показано, что процесс кристаллизации начинается с выделения твердого раствора на основе γ-фазы, а завершается формированием эвтектики на основе интерметаллида Ni3Nb. Нагрев расплава выше критических температур приводит к увеличению переохлаждения и практически не влияет на эвтектическую температуру. На основании результатов изучения физико-химических свойств жидкого металла и процесса его кристаллизации предложены режимы высокотемпературной обработки расплава, которые позволяют существенно улучшить качество отливок из жаропрочных сплавов типа ЭП902, содержащих значительное количество литейных техногенных отходов в шихте. Осуществлены механические испытания образцов опытных плавок, проведенных по оптимальному режиму высокотемпературной обработки расплава (ВТОР). Применение ВТОР для плавок с 50 %-ным содержанием литейных отходов в шихте позволило получить у отливок уровень прочностных и пластических свойств, превосходящий технические условия, а также стабилизировать их значения от плавки к плавке.</p></abstract><trans-abstract xml:lang="en"><p>At present time, metallurgical wastes are used in metallurgical alloys production more and more. The volume accumulation and increase of return age effect on charge pollution by undesirable elements and nonmetallic inclusions. As a result, structure and properties of the casting inevitably get worse. This circumstance must influence on polytherm’s character of physical properties of the melt, necessary temperature and time parameters of the heat-resistant alloy’s melting accordingly. We have researched the temperature dependences of electrical resistance and kinematic viscosity of liquid heat-resistant composites based оn Ni – Nb – Cr – Mo systems. The critical temperatures were determined for the EP902 alloy. Heating up to these temperatures leads to irreversible changes in direction of the melt improving. Interaction was found between the amount of foundry waste and features of temperature dependences of the melt physico-chemical properties. An increase in the amount of foundry waste using in remelting results in the critical temperatures increasing. Influence of the melt conditions on crystallization process and on the structure of hard metal has been studied. The process of alloy EР902 solidification was researched by differential thermal analysis method. It has shown that the crystallization process starts with extraction of solid solution on the base of γ-phases and ends with forming of the eutectic based on the Ni3Nb intermetallic compound. Heating of the melt over the critical temperature leads to an increase of supercooling and does not effect on the eutectic temperature. The processing mode of the high temperature melt treatment was proposed based on the research results of physico-chemical properties of the liquid metal and process of the melt crystallization. It allows obtaining the highest quality of casting of heat-resistant EР902 alloy, which contains significant amount of foundry waste in the charge. The mechanical tests were implemented for experimental samples melted out by the optimal mode of high-temperature melt treatment (HTTM). Application of HTTM for the melts, contained 50 % of foundry waste in charge, allows obtaining the level of strength and plastic properties exceeding the technical requirements, stabilizing and combining it from melt to melt.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>жидкий металл</kwd><kwd>физико-химические свойства</kwd><kwd>температурные зависимости</kwd><kwd>структура</kwd><kwd>кристаллизация</kwd><kwd>шихта</kwd><kwd>литейные отходы</kwd><kwd>обработка расплава</kwd><kwd>качество металла</kwd></kwd-group><kwd-group xml:lang="en"><kwd>liquid metal</kwd><kwd>physico-chemical properties</kwd><kwd>temperature dependence</kwd><kwd>structure</kwd><kwd>crystallization</kwd><kwd>charge</kwd><kwd>foundry wastes</kwd><kwd>melt treatment</kwd><kwd>metal quality</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">Еланский Г.Н., Еланский Д.Г. 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