Frontier Materials & TechnologiesFrontier Materials & TechnologiesFrontier Materials & Technologies2782-40392782-6074Togliatti State University123710.18323/2782-4039-2026-2-76-7ArticlesСтатьиResearch ArticleDeformation behaviour of FeGaCe alloys at elevated temperaturesДеформационное поведение сплавов FeGaCe при повышенных температурахhttps://orcid.org/0009-0009-5217-230XStrizhachenkoIvan R.СтрижаченкоИван Романович
Russian Federation

engineer

инженер

vano_sk8@bk.ruhttps://orcid.org/0000-0001-8928-1707GervasyevaIrina V.ГервасьеваИрина Владимировна
Russian Federation

Doctor of Sciences (Physics and Mathematics), leading researcher.

доктор физико-математических наук, ведущий научный сотрудник.

gervasy@imp.uran.ruhttps://orcid.org/0000-0002-5808-3959MilyutinVasily A.МилютинВасилий Александрович
Russian Federation

PhD (Physics and Mathematics), leading researcher.

кандидат физико-математических наук, ведущий научный сотрудник.

milyutin@imp.uran.ruhttps://orcid.org/0000-0002-5627-0566KalonovAzambek А.КалоновАзамбек Атхамович
Russian Federation

PhD (Physics and Mathematics), researcher

кандидат физико-математических наук, научный сотрудник

azambek-k@mail.ruhttps://orcid.org/0009-0002-8258-8604AkhmedyanovAleksandr MaratovichАхмедьяновАлександр Маратович
Russian Federation

Head of laboratory

начальник лаборатории

akhmedianovam@susu.ruhttps://orcid.org/0000-0003-2907-679XSamoilovSergey PavlovichСамойловСергей Павлович
Russian Federation

engineer

инженер

samoilovsp@susu.ruM.N. Mikheev Institute of metal physics of the Ural branch of RASИнститут физики металлов им. М.Н. Михеева Уральского отделения РАНSouth Ural state universityЮжно-Уральский государственный университет300620262Frontier Materials & TechnologiesFrontier Materials & Technologies79863006202630062026Copyright ©; 2026, Strizhachenko I.R., Gervasyeva I.V., Milyutin V.A., Kalonov A.А., Akhmedyanov A.M., Samoilov S.P.Copyright ©; 2026, Стрижаченко И.Р., Гервасьева И.В., Милютин В.А., Калонов А.А., Ахмедьянов А.М., Самойлов С.П.2026Strizhachenko I.R., Gervasyeva I.V., Milyutin V.A., Kalonov A.А., Akhmedyanov A.M., Samoilov S.P.Стрижаченко И.Р., Гервасьева И.В., Милютин В.А., Калонов А.А., Ахмедьянов А.М., Самойлов С.П.https://creativecommons.org/licenses/by/4.0https://vektornaukitech.ru/jour/article/view/1237

Abstract: Problem. The low ductility of binary Fe-Ga alloys significantly limits their thermomechanical processing capabilities and industrial application as magnetostrictive materials. Although alloying with rare-earth metals improves performance characteristics, the influence of temperature and hot deformation conditions on the behaviour of Fe-Ga-based alloys has been insufficiently studied, which prevents the optimisation of technological regimes for manufacturing sheet products without the risk of fracture and the formation of undesirable microstructures. Aim. To determine the influence of hot deformation temperature (700, 850, and 1000 °C) on the deformation behaviour, microstructure, and crystallographic texture of Fe80Ga20 alloys with additions of 0.1 and 0.2 % Ce, and to establish the optimal hot deformation temperature. Methods. The binary Fe80Ga20 alloy and two doped (Fe80Ga20)99.9Ce0.1 and (Fe80Ga20)99.8Ce0.2 alloys were studied. Physical simulation of hot rolling was carried out using a Gleeble 3800 simulator under plane strain conditions at temperatures of 700, 850, and 1000 °C with a strain degree of 75 %. The structure and texture were studied using optical metallography and scanning electron microscopy with EBSD analysis. Results. The addition of cerium significantly improves the ductility of the alloys at temperatures of 850 and 1000 °C. At 700 °C, intense strain hardening and crack formation are observed in all alloys. At 1000 °C, intense grain growth and the formation of a heterogeneous structure occur. The differences in the behaviour of the alloys with 0.1 and 0.2 % of Ce are insignificant. Conclusions. Cerium alloying significantly improves the ductility of the binary Fe80Ga20 alloy. The optimal hot deformation temperature for Fe-Ga-Ce alloys is 850 °C.

Аннотация: Проблема. Низкая пластичность бинарных сплавов Fe-Ga существенно ограничивает возможности их термомеханической обработки и промышленного применения в качестве магнитострикционных материалов. Несмотря на то, что легирование редкоземельными металлами улучшает эксплуатационные характеристики, влияние температуры и условий горячей деформации на поведение сплавов на основе Fe-Ga изучено недостаточно, что не позволяет оптимизировать технологические режимы получения листового проката без риска разрушения и формирования нежелательной структуры. Цель. Определить влияние температуры горячей деформации (700, 850 и 1000 °C) на деформационное поведение, микроструктуру и кристаллографическую текстуру сплавов Fe80Ga20 с добавками 0,1 и 0,2 % Ce и установить оптимальную температуру горячей деформации. Методы. Исследованы бинарный сплав Fe80Ga20 и два легированных сплава (Fe80Ga20)99,9Ce0,1 и (Fe80Ga20)99,9Ce0,2. Физическое моделирование горячей прокатки проводили на симуляторе Gleeble 3800 в режиме плоской деформации при температурах 700, 850 и 1000 °C и степенью деформации 75 %. Структура и текстура изучены методами оптической металлографии и сканирующей электронной микроскопии с EBSD-анализом. Результаты. Добавка церия существенно повышает пластичность сплавов при температурах 850 и 1000 °C. При 700 °C во всех сплавах наблюдается интенсивное деформационное упрочнение и образование трещин. При 1000 °C происходит интенсивный рост зёрен и формирование неоднородной структуры. Различия в поведении сплавов с 0,1 и 0,2 % Ce незначительны. Выводы. Легирование церием позволяет существенно повысить пластичность бинарного сплава Fe80Ga20. Оптимальной температурой горячей деформации сплавов Fe-Ga-Ce является 850 °C.

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