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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">10.17073/0021-3438-2018-6-51-57</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-827</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>Обработка металлов давлением</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Pressure Treatment of Metals</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ВЛИЯНИЯ СТЕПЕНИ ИЗМЕЛЬЧЕНИЯ   ЗЕРЕННОЙ СТРУКТУРЫ СЛИТКОВ ИЗ СПЛАВА 6063   НА ИХ ПЛАСТИЧНОСТЬ, ПАРАМЕТРЫ ПРЕССОВАНИЯ   И СВОЙСТВА ПРЕССОВАННЫХ ПРОФИЛЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>STUDY INTO THE INFLUENCE OF THE GRAIN STRUCTURE REFINEMENT DEGREE OF ALLOY 6063 INGOTS ON THEIR PLASTICITY, EXTRUSION PARAMETERS AND PROPERTIES OF EXTRUDED PROFILES</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>Сырямкин</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Syryamkin</surname><given-names>R. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант кафедры обработки металлов давлением (ОМД) Института цветных металлов и материаловедения.</p><p> 660025, г. Красноярск, пр-т Красноярский рабочий, 95.</p></bio><bio xml:lang="en"><p>Postgraduate student, Metal forming department.</p></bio><email xlink:type="simple">roman.syryamkin@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>Горбунов</surname><given-names>Ю. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gorbunov</surname><given-names>Yu. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>зам. ген. директора по перспективному развитию. </p><p>660111, г. Красноярск, пр-т Пограничников, 103.</p></bio><bio xml:lang="en"><p>Deputy director general for prospective development .</p></bio><email xlink:type="simple">j.a.gorbunov@gmail.com</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>Сидельников</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sidelnikov</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф., зав. кафедрой ОМД .</p><p> 660025, г. Красноярск, пр-т Красноярский рабочий, 95.</p></bio><bio xml:lang="en"><p>Dr. Sci. (Tech.), Prof., Head of the Metal forming department.</p><p>660025, Russia, Krasnoyarsk, Krasnoyarsk worker ave., 95.</p></bio><email xlink:type="simple">sbs270359@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>Отмахова</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Otmahova</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>магистрант кафедры ОМД. </p><p> 660025, г. Красноярск, пр-т Красноярский рабочий, 95.</p></bio><bio xml:lang="en"><p>Graduate student, Metal forming department.</p><p>660025, Russia, Krasnoyarsk, Krasnoyarsk worker ave., 95.</p></bio><email xlink:type="simple">A.Otmahova@sial-group.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Сибирский федеральный университет.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Siberian Federal University (SibFU).</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «ЛПЗ «Сегал».</institution><country>Россия</country></aff><aff xml:lang="en"><institution>«LPZ «Segal» Ltd.</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>14</day><month>12</month><year>2018</year></pub-date><volume>0</volume><issue>6</issue><fpage>51</fpage><lpage>57</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Сырямкин Ю.А., Горбунов Ю.А., Сидельников С.Б., Отмахова А.Ю., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Сырямкин Ю.А., Горбунов Ю.А., Сидельников С.Б., Отмахова А.Ю.</copyright-holder><copyright-holder xml:lang="en">Syryamkin R.S., Gorbunov Y.A., Sidelnikov S.B., Otmahova A.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://cvmet.misis.ru/jour/article/view/827">https://cvmet.misis.ru/jour/article/view/827</self-uri><abstract><p>В результате анализа научно-технической литературы и практических данных было установлено, что изменение пара- метров литья слитков при применении различных конструкций кристаллизаторов позволяет варьировать степень из- мельчения зеренной структуры слитков в достаточно широком диапазоне, что должно отражаться на условиях экстру- зии профилей из алюминиевых сплавов и их физико-механических характеристиках. Поэтому целью настоящей работы  являлась оценка влияния степени измельчения зеренной структуры слитков сплава 6063 на деформационные и ско- ростные параметры прессования и механические свойства получаемых профилей. Для исследований было использова- но несколько партий слитков диаметром 178 мм из сплава 6063, отлитых в промышленных условиях, а также профили,  полученные методом прямого прессования на горизонтальном гидравлическом прессе усилием 18 МН, подвергнутые  закалке и старению. Оценка размера зерна в гомогенизированных слитках проводилась методом световой микроскопии  на оптическом микроскопе Olimpus, а испытания механических свойств – на универсальной испытательной машине  Inspect 20 кН-1. Установлено, что исходный размер зерна в структуре слитка оказывает значительное влияние как на пла- стичность заготовок при прессовании, так и на конечную структуру и механические свойства профильной продукции из  алюминиевых сплавов. Анализируя полученные результаты, можно заключить, что повышение прочностных характери- стик пресс-изделий из слитков с более измельченной структурой связано с тем, что в структуре металла после его дефор- мации сохраняется мелкое зерно, а пластичность литого металла растет с увеличением степени измельчения зеренной  структуры в слитке. В связи с этим повышаются эффективность закалки профильной продукции и скорость истечения  металла при прессовании.</p></abstract><trans-abstract xml:lang="en"><p>The analysis of scientific and technical literature and practical data made it possible to found that changes in casting parameters for ingots using different mold designs allows varying the degree of ingot grain structure refinement in a sufficiently wide range, which should be reflected in the conditions of aluminum alloy profile extrusion as well as physical and mechanical properties of these profiles. Therefore, the purpose of the research was to assess the influence of the degree of grain structure refinement for Alloy 6063 ingots on extrusion deformation and speed parameters and mechanical properties of profiles produced. The study used several batches of Alloy 6063 ingots 178 mm in diameter cast under industrial conditions, as well as profiles obtained by direct extrusion on a 18 MN horizontal hydraulic press subjected to quenching and aging. The grain size in homogenized ingots was estimated by light microscopy using the Olimpus optical microscope, and mechanical properties tests were carried out using the Inspect 20 kN-1 universal test machine. It was found that the initial grain size in the ingot structure exerts a significant influence both on ingot plasticity during extrusion, and on the final structure and mechanical properties of profile products made of aluminum alloys. Having analyzed the results obtained, we can conclude that the increase in strength characteristics of products extruded from ingots with a more refined structure is due to the fact that fine grains are retained in the structure of metal after its deformation, and cast metal plasticity increases with the degree of grain structure refinement in the ingot. This leads to the higher efficiency of profile product hardening and metal outflow rate during extrusion.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>размер зерна</kwd><kwd>литье</kwd><kwd>экструзия</kwd><kwd>механические свойства</kwd><kwd>структура</kwd></kwd-group><kwd-group xml:lang="en"><kwd>grain size</kwd><kwd>casting</kwd><kwd>extrusion</kwd><kwd>mechanical properties</kwd><kwd>structure</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">Макаров Г.С. 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