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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Frontier Materials &amp; Technologies</journal-id><journal-title-group><journal-title xml:lang="en">Frontier Materials &amp; Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Frontier Materials &amp; Technologies</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2782-4039</issn><issn publication-format="electronic">2782-6074</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">1113</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2025-3-73-6</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Study of the influence of deformation temperature on the mechanical behaviour and fracturing behaviour of the cast TNM-B1 alloy</article-title><trans-title-group xml:lang="ru"><trans-title>Исследование влияния температуры деформации на механическое поведение и особенности разрушения литого сплава TNM-B1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sokolovskiy</surname><given-names>Vitaly S.</given-names></name><name xml:lang="ru"><surname>Соколовский</surname><given-names>Виталий Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), researcher of the Laboratory of Bulk Nanostructured Materials</p></bio><bio xml:lang="ru"><p>кандидат технических наук, научный сотрудник лаборатории объемных наноструктурных материалов</p></bio><email>sokolovskiy@bsuedu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0815-3525</contrib-id><name-alternatives><name xml:lang="en"><surname>Salishchev</surname><given-names>Gennady A.</given-names></name><name xml:lang="ru"><surname>Салищев</surname><given-names>Геннадий Алексеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), Professor, Head of the Laboratory of Bulk Nanostructured Materials</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор, заведующий лабораторией объемных наноструктурных материалов</p></bio><email>salishchev_g@bsuedu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Belgorod State University</institution></aff><aff><institution xml:lang="ru">Белгородский государственный национальный исследовательский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-30" publication-format="electronic"><day>30</day><month>09</month><year>2025</year></pub-date><issue>3</issue><issue-title xml:lang="ru"/><fpage>81</fpage><lpage>89</lpage><history><date date-type="received" iso-8601-date="2025-09-30"><day>30</day><month>09</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-09-30"><day>30</day><month>09</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Sokolovskiy V.S., Salishchev G.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Соколовский В.С., Салищев Г.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Sokolovskiy V.S., Salishchev G.A.</copyright-holder><copyright-holder xml:lang="ru">Соколовский В.С., Салищев Г.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://vektornaukitech.ru/jour/article/view/1113">https://vektornaukitech.ru/jour/article/view/1113</self-uri><abstract xml:lang="en"><p>The paper covers the study of β-solidifying TiAl-based alloys, which are extremely promising materials for the aviation industry with an operating temperature of up to 850 °C, have high specific strength characteristics. The authors studied the influence of tensile deformation temperature in the range of <italic>T</italic>=25–1000 °C on the mechanical properties, phase composition and crack formation in the cast β-solidifying TNM-B1 alloy. It is found that the cast TNM-B1 alloy is characterised by a complex microstructure, including (α<sub>2</sub>+γ) lamellar colonies and interlayers of β(B2)+ω phases, the evolution of which at elevated deformation temperatures determines the material behaviour. It is shown that the ω-phase dissolution and the precipitation of dispersed secondary β-phase particles at <italic>T</italic>&gt;950 °C have a significant influence on the mechanical characteristics. A pronounced temperature dependence of strength and ductility is identified: the maximum strength is observed at 800 °C, while the greatest relative elongation in the studied temperature range is achieved at 1000 °C. The transition from brittle to viscous fracture occurs in the temperature range of about 950 °C. Moreover, a dependence of the crack propagation mechanism on the orientation of lamellar colonies relative to the deformation axis is revealed: with an increase in temperature, the differences are leveled, and at 1000 °C, complete suppression of crack formation with the formation of pores along the boundaries of colonies and clusters of secondary β-phase particles is observed. The obtained results demonstrate the important role of microstructural transformations in the formation of deformation behaviour and mechanical properties of the TNM-B1 alloy based on gamma-titanium aluminide, which is of practical importance for the development of technologies for its thermomechanical processing.</p></abstract><trans-abstract xml:lang="ru"><p>Статья посвящена β-затвердевающим сплавам на основе TiAl, которые являются крайне перспективными для авиационной промышленности материалами с рабочей температурой до 850 °C, обладают высокими удельными прочностными характеристиками. Исследовано влияние температуры деформации при растяжении в интервале <italic>T</italic>=25–1000 °C на механические свойства, фазовый состав и трещинообразование в литом сплаве – β-затвердевающем TNM-B1. Установлено, что литой сплав TNM-B1 характеризуется комплексной микроструктурой, включающей (α<sub>2</sub>+γ)-пластинчатые колонии и прослойки β(B2)+ω-фаз, эволюция которых при повышенных температурах деформации определяет поведение материала. Показано, что растворение ω-фазы и выделение дисперсных частиц вторичной β-фазы при <italic>T</italic>&gt;950 °C оказывают существенное влияние на механические характеристики. Установлена выраженная температурная зависимость прочности и пластичности: максимальная прочность наблюдается при 800 °C, в то время как наибольшее относительное удлинение в исследованном интервале температур достигается при 1000 °C. Переход от хрупкого к вязкому характеру разрушения происходит в интервале температур в области 950 °C. Кроме того, выявлена зависимость механизма распространения трещин от ориентации пластинчатых колоний относительно оси деформации: при повышении температуры различия нивелируются, а при 1000 °С наблюдается полное подавление трещинообразования с формированием пор вдоль границ колоний и скоплений частиц вторичной β-фазы. Полученные результаты демонстрируют важную роль микроструктурных превращений в формировании деформационного поведения и механических свойств сплава на основе гамма-алюминида титана TNM-B1, что имеет практическое значение для разработки технологий его термомеханической обработки.</p></trans-abstract><kwd-group xml:lang="en"><kwd>TNM-B1 cast alloy</kwd><kwd>mechanical behaviour</kwd><kwd>fracturing behaviour</kwd><kwd>TNM alloy</kwd><kwd>microstructure</kwd><kwd>brittle-ductile transition</kwd><kwd>strength</kwd><kwd>plasticity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>литой сплав TNM-B1</kwd><kwd>механическое поведение</kwd><kwd>особенности разрушения</kwd><kwd>сплав типа TNM</kwd><kwd>микроструктура</kwd><kwd>хрупко-вязкий переход</kwd><kwd>прочность</kwd><kwd>пластичность</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The work was carried out with the financial support of the Russian Science Foundation (agreement No. 19-79-30066) using the equipment of the Common Use Center “Technologies and Materials” of BelSU National Research University, https://rscf.ru/prjcard_int?19-79-30066.</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (соглашение № 19-79-30066) с использованием оборудования Центра коллективного пользования «Технологии и материалы» НИУ «БелГУ», https://rscf.ru/prjcard_int?19-79-30066.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Genc O., Unal R. 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