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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">10.17073/0368-0797-2026-3-250-257</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-3084</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>Микроструктура и механические характеристики термически обработанного сплава Inconel 625, полученного по технологии проволочного электронно-лучевого аддитивного производства</article-title><trans-title-group xml:lang="en"><trans-title>Microstructure and mechanical properties of heat-treated Inconel 625 alloy obtained by wire electron-beam additive manufacturing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-4797-5604</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овчаренко</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovcharenko</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валерия Алексеевна Овчаренко, аспирант отделения материа­ловедения инженерной школы новых производственных технологий</p><p>Россия, 634050, Томск, пр. Ленина, 30</p></bio><bio xml:lang="en"><p>Valeriia A. Ovcharenko, Postgraduate of the Department of Material Science of Engineering School of New Manufacturing Technologies</p><p>30 Lenina Ave., Tomsk 634050, Russian Federation</p></bio><email xlink:type="simple">vy.gornova@yandex.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/0000-0003-2334-1679</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бабаев</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Babaev</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артём Сергеевич Бабаев, к.т.н., старший научный сотрудник лаборатории нанотехнологий металлургии</p><p>Россия, 634050, Томск, пр. Ленина, 36 стр. 27</p></bio><bio xml:lang="en"><p>Artem S. Babaev, Cand. Sci. (Eng.), Senior Researcher of the Laboratory of Nanotechnology in Metallurgy</p><p>36 Lenina Ave., bld. 27, Tomsk 634050, Russian Federation</p></bio><email xlink:type="simple">temkams@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/0000-0001-8254-5853</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Савченко</surname><given-names>Н. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Savchenko</surname><given-names>N. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Леонидович Савченко, д.т.н., ведущий научный сотрудник лаборатории физики упрочнения поверхности</p><p>Россия, 634055, Томск, пр. Академи­ческий, 2/4</p></bio><bio xml:lang="en"><p>Nickolai L. Savchenko, Dr. Sci. (Eng.), Leading Researcher of the Laboratory of Physics of Surface Hardening</p><p>2/4 Lenina Ave., Tomsk 634055, Russian Federation</p></bio><email xlink:type="simple">savnick@ispms.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/0000-0002-2222-2865</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Стрелкова</surname><given-names>И. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Strelkova</surname><given-names>I. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ирина Леонидовна Стрелкова, к.т.н., доцент отделения материаловедения инженерной школы новых производственных технологий</p><p>Россия, 634050, Томск, пр. Ленина, 30</p></bio><bio xml:lang="en"><p>Irina L. Strelkova, Cand. Sci. (Eng.), Assist. Prof. of the Department of Material Science of Engineering School of New Manufacturing Technologies</p><p>30 Lenina Ave., Tomsk 634050, Russian Federation</p></bio><email xlink:type="simple">strelkova@tpu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский Томский политехнический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Tomsk Polytechnic University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Национальный исследовательский Томский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research Tomsk State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт физики прочности и материаловедения Сибирского отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2026</year></pub-date><volume>69</volume><issue>3</issue><fpage>250</fpage><lpage>257</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Овчаренко В.А., Бабаев А.С., Савченко Н.Л., Стрелкова И.Л., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Овчаренко В.А., Бабаев А.С., Савченко Н.Л., Стрелкова И.Л.</copyright-holder><copyright-holder xml:lang="en">Ovcharenko V.A., Babaev A.S., Savchenko N.L., Strelkova I.L.</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/3084">https://fermet.misis.ru/jour/article/view/3084</self-uri><abstract><p>В работе описаны особенности формирования структуры жаропрочного сплава Inconel 625 (аналог ХН75МБТЮ), полученного методом проволочного электронно-лучевого аддитивного производства (ПЭЛАП), а затем подвергнутого закалке при 1200 °С и двухступенчатой закалке 1200 – 1000 °С. Термообработка проводилась в вакуумной печи в среде низкого вакуума (–1 Бар), для ускоренного охлаж­дения использовали продувку инертным газом (Ar). С использованием высокоточного аналитического оборудования авторы провели исследования микроструктуры, фазового состава и механических свойств образцов в сечениях вдоль и поперёк направления печати. При исследовании образца в сечении вдоль направления печати выделены три характерных зоны: основная, повторного нагрева и зона смены кристаллизационного фронта. Они имеют разную структуру и, как следствие, различие в структурно-чувствительных механических характеристиках. Установлено, что в процессе печати в зоне основного слоя из-за низкой теплопроводности материала происходит аккумуляция тепла, приводящая к выделению орторомбической фазы δ-Ni3(Nb, Mo) в междендритном пространстве. Выбранная температура закалки позволила исправить дендритную морфологию с образованием крупного зерна размером 0,3 – 0,5 мм и полным растворением δ-фазы в γ-Ni матрице. Двухступенчатая закалка сопровождается изотермическим выделением δ-фазы по границам и внутри зерен, приводя к дисперсионному упрочнению сплава. Авторы провели испытания на одноосное растяжение при комнатной температуре, получены численные значения предела прочности (σв ), предела текучести (σт ) и относительного удлинения (δ5 ). Установлено, что наилучшее сочетание механических характеристик получено при двухступенчатой закалке сплава.</p></abstract><trans-abstract xml:lang="en"><p>The paper describes the features of structure formation of heat-resistant alloy Inconel 625 obtained by wire electron-beam additive manufacturing (WEBAM) technology and then subjected to quenching at 1200 °С and two-stage quenching at 1200 – 1000 °С. Heat treatment was carried out in a vacuum furnace, in a low vacuum environment of –1 Bar, inert gas (Ar) blowing was used for accelerated cooling. Using high-precision analytical equipment, the authors studied the microstructure, phase composition and mechanical properties of the samples in the sections along and across the deposition direction. When examining the sample in the cross-section along the deposition direction, three characteristic zones were identified: base metal zone, reheating zone, and zone of change of the crystallization front. They have different structure and, as a consequence, the difference in structure-sensitive mechanical characteristics. It was found that in the deposition process in the base layer zone, due to the material low thermal conductivity, there is an accumulation of heat, leading to the release of orthorhombic phase δ-Ni3(Nb, Mo) in the interdendritic space. The chosen quenching temperature allowed to correct the dendritic morphology, with the formation of coarse grains of 0.3 – 0.5 mm and complete dissolution of δ-phase in γ-Ni matrix. The two-stage quenching is accompanied by isothermal release of δ-phase at grain boundaries and within grains, leading to dispersion hardening of the alloy. Uniaxial tensile tests at room temperature were carried out and numerical values of tensile strength (σv ), yield strength (σt ) and relative elongation (δ5 ) were determined. The best combination of mechanical characteristics was obtained by two-stage quenching of the alloy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>аддитивные технологии</kwd><kwd>ПЭЛАП</kwd><kwd>Inconel 625</kwd><kwd>термическая обработка</kwd><kwd>двухступенчатая закалка</kwd><kwd>микроструктура</kwd><kwd>δ-фаза</kwd><kwd>механические характеристики</kwd></kwd-group><kwd-group xml:lang="en"><kwd>additive technologies</kwd><kwd>WEBAM</kwd><kwd>Inconel 625</kwd><kwd>heat treatment</kwd><kwd>two-stage quenching</kwd><kwd>microstructure</kwd><kwd>δ-phase</kwd><kwd>anisotropy</kwd><kwd>mechanical properties</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда, проект №23-79-10166 (https://rscf.ru/en/project/23-79-10166).</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation, project No. 23-79-10166 (https://rscf.ru/en/project/23-79-10166).</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">Kocaman E., Gürol U., Günen A., Çam G. 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