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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">1238</article-id><article-id pub-id-type="doi">10.18323/2782-4039-2026-2-76-8</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">Effect of Cold Rolling Reduction on Precipitation of Al20Cu2Mn3 Particles in Al-Cu-Mn System Alloys</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние обжатия при холодной прокатке на выделение частиц Al20Cu2Mn3 в сплавах системы Al-Cu-Mn</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-6874-0870</contrib-id><name-alternatives><name xml:lang="en"><surname>Chinov</surname><given-names>Vyacheslav Yu.</given-names></name><name xml:lang="ru"><surname>Чинов</surname><given-names>Вячеслав Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>postgraduate student of Professor V.M. Finkel Chair of natural sciences, lecturer at the Chair of metal forming and materials science of EVRAZ ZSMK (West Siberian Metallurgical Complex)</p></bio><bio xml:lang="ru"><p>аспирант кафедры естественнонаучных дисциплин им. профессора В.М. Финкеля, преподаватель кафедры обработки металлов давлением и материаловедения ЕВРАЗ ЗСМК</p></bio><email>chinov_vy@sibsiu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7270-6008</contrib-id><name-alternatives><name xml:lang="en"><surname>Levagina</surname><given-names>Alina A.</given-names></name><name xml:lang="ru"><surname>Левагина</surname><given-names>Алина Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>master, leading engineer at the Chair of metal forming and materials science of EVRAZ ZSMK (West Siberian Metallurgical Complex)</p></bio><bio xml:lang="ru"><p>магистр кафедры обработки металлов давлением и материаловедения ЕВРАЗ ЗСМК, ведущий инженер кафедры обработки металлов давлением и материаловедения ЕВРАЗ ЗСМК</p></bio><email>levagina_aa@sibsiu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6869-4764</contrib-id><name-alternatives><name xml:lang="en"><surname>Aryshensky</surname><given-names>Evgeny V.</given-names></name><name xml:lang="ru"><surname>Арышенский</surname><given-names>Евгений Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), Associate Professor, Head of Chair of metal forming and materials science of EVRAZ ZSMK(West Siberian Metallurgical Complex)</p></bio><bio xml:lang="ru"><p>доктор технических наук, доцент, заведующий кафедрой обработки металлов давлением и материаловедения ЕВРАЗ ЗСМК</p></bio><email>ar-evgenii@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7670-9054</contrib-id><name-alternatives><name xml:lang="en"><surname>Rasposienko</surname><given-names>Dmitry Yu.</given-names></name><name xml:lang="ru"><surname>Распосиенко</surname><given-names>Дмитрий Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>PhD (Engineering), Head of the laboratory of non-ferrous alloys. </p></bio><bio xml:lang="ru"><p>кандидат технических наук, заведующий лабораторией цветных сплавов</p></bio><email>rasposienko@imp.uran.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4809-8660</contrib-id><name-alternatives><name xml:lang="en"><surname>Konovalov</surname><given-names>Sergey V.</given-names></name><name xml:lang="ru"><surname>Коновалов</surname><given-names>Сергей Валерьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Doctor of Sciences (Engineering), Professor, vice-rector for research and innovation. </p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор, проректор по научной и инновационной деятельности.</p></bio><email>konovalov@sibsiu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Siberian state industrial university</institution></aff><aff><institution xml:lang="ru">Сибирский государственный индустриальный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">M.N. Mikheev Institute of metal physics of the Ural branch of RAS</institution></aff><aff><institution xml:lang="ru">Институт физики металлов им. М.Н. Михеева Уральского отделения РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2026-06-30" publication-format="electronic"><day>30</day><month>06</month><year>2026</year></pub-date><issue>2</issue><issue-title xml:lang="en">Frontier Materials &amp; Technologies</issue-title><issue-title xml:lang="ru">Frontier Materials &amp; Technologies</issue-title><fpage>87</fpage><lpage>96</lpage><history><date date-type="received" iso-8601-date="2026-06-30"><day>30</day><month>06</month><year>2026</year></date><date date-type="accepted" iso-8601-date="2026-06-30"><day>30</day><month>06</month><year>2026</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2026, Chinov V.Y., Levagina A.A., Aryshensky E.V., Rasposienko D.Y., Konovalov S.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2026, Чинов В.Ю., Левагина А.А., Арышенский Е.В., Распосиенко Д.Ю., Коновалов С.В.</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="en">Chinov V.Y., Levagina A.A., Aryshensky E.V., Rasposienko D.Y., Konovalov S.V.</copyright-holder><copyright-holder xml:lang="ru">Чинов В.Ю., Левагина А.А., Арышенский Е.В., Распосиенко Д.Ю., Коновалов С.В.</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/1238">https://vektornaukitech.ru/jour/article/view/1238</self-uri><abstract xml:lang="en"><p><bold><italic>Abstract:</italic></bold> <bold>Problem.</bold> The influence of the degree of cold deformation on the morphology and precipitation of T-phase particles (Al20Cu2Mn3) in Al–Cu–Mn system alloys (ALTEK) during final annealing has been insufficiently studied. This complicates the prediction of properties and the optimisation of thermomechanical processing of sheets and foils for electrical engineering applications. <bold>Objective.</bold> To establish the patterns of the influence of the cold rolling deformation degree (50 and 90 %) on the formation, morphology, and size of T-phase (Al20Cu2Mn3) particles, as well as on the complex of mechanical and electrical properties of sheets and foils made of ALTEK alloy of the Al–2%Cu–2%Mn system, produced by the following scheme: hot rolling → cold rolling → annealing at 400 C. <bold>Methods.</bold> Ingots were produced by chill casting and subjected to hot rolling, intermediate annealing, and cold rolling. A portion of the specimens was annealed at 400 °С for 3 hours. The microstructure was studied using transmission electron microscopy. Electrical conductivity (EC) and mechanical properties were measured. <bold>Results.</bold> It was found that the majority of Al20Cu2Mn3 particles is formed during hot rolling. Cold deformation causes dislocation hardening and fragmentation of existing particles. Regardless of the degree of deformation (50 or 90 %), annealing at 400 °С forms an identical microstructure with lamellar T-phase precipitates measuring 120–200 nm. The electrical conductivity increases from 14.6–14.8 MS/m to 29.6 MS/m after annealing. <bold>Conclusions.</bold> The degree of cold deformation in the investigated range does not affect the volume fraction of T-phase particles after annealing. The main increase in electrical conductivity and softening are caused by a reduction in dislocation density and further decomposition of the solid solution with coagulation of particles formed during the hot rolling stage.</p></abstract><trans-abstract xml:lang="ru"><p><bold><italic>Аннотация:</italic></bold> <bold>Проблема.</bold> Влияние степени холодной деформации на морфологию и выделение частиц T-фазы (Al₂₀Cu₂Mn₃) в сплавах системы Al–Cu–Mn (АЛТЭК) при финальном отжиге изучено недостаточно. Это затрудняет прогнозирование свойств и оптимизацию термомеханической обработки листов и фольги для электротехнических применений. <bold>Цель.</bold> Установить закономерности влияния степени деформации при холодной прокатке (50 и 90 %) на формирование, морфологию и размеры частиц T-фазы (Al20Cu2Mn3), а также на комплекс механических и электрических свойств листов и фольги из сплава АЛТЭК системы Al–2%Cu–2%Mn, получаемых по схеме: горячая прокатка → холодная прокатка → отжиг при 400 C. <bold>Методы.</bold> Слитки получены литьем в кокиль и подвергнуты горячей прокатке, промежуточному отжигу и холодной прокатке. Часть образцов отожжена при 400 °С, 3 ч. Микроструктура исследована методами просвечивающей электронной микроскопии. Проведены измерения удельной электропроводности (УЭП) и механических свойств. <bold>Результаты.</bold> Установлено, что основное количество частиц Al20Cu2Mn3 формируется при горячей прокатке. Холодная деформация вызывает дислокационное упрочнение и дробление существующих частиц. Независимо от степени деформации (50 или 90 %) отжиг при 400 °С формирует идентичную микроструктуру с пластинчатыми выделениями T-фазы размером 120–200 нм. УЭП возрастает с 14,6–14,8 МСм/м до 29,6 МСм/м после отжига. <bold>Выводы. </bold>Степень холодной деформации в исследованном диапазоне не влияет на объемную долю частиц T-фазы после отжига. Основной прирост электропроводности и разупрочнение обусловлены снижением плотности дислокаций и дораспадом твердого раствора с коагуляцией частиц, сформированных на этапе горячей прокатки.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Al-Cu-Mn alloys</kwd><kwd>ALTEK</kwd><kwd>cold rolling</kwd><kwd>Al20Cu2Mn3</kwd><kwd>TEM</kwd><kwd>electrical conductivity</kwd><kwd>dislocations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>Al-Cu-Mn сплавы, АЛТЭК, холодная прокатка, Al20Cu2Mn3, ПЭМ, удельная электропроводность, дислокации</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation grant No. 24-19-00064, https://rscf.ru/project/24-19-00064/.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 24-19-00064, https://rscf.ru/project/24-19-00064/.</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">Abnar B., Gashtiazar S., Rometsch P., Javidani M. 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