chemicallytechFine Chemical TechnologiesТонкие химические технологии2410-65932686-7575MIREA – Russian Technological University (RTU MIREA).10.32362/2410-6593-2025-20-5-516-524RMXBKCchemicallytech-2308Research ArticleCHEMISTRY AND TECHNOLOGY OF INORGANIC MATERIALSХИМИЯ И ТЕХНОЛОГИЯ НЕОРГАНИЧЕСКИХ МАТЕРИАЛОВInfluence of equal channel angular pressing on the strength and corrosion properties of FeNiMnCr high-entropy alloyВлияние равноканального углового прессования на прочностные и коррозионные свойства высокоэнтропийного сплава FeNiMnCrhttps://orcid.org/0000-0002-0319-0992АбуайяшА.М.М.AbuayashA.M.M.

Абуайяш Адхам Мухаммад Муса, аспирант

450076, Приволжский федеральный округ, Республика Башкортостан, г. Уфа, ул. ЗакиВалиди, д. 32

Adham Muhammad Musa Abuayash, Postgraduate Student

32, Zaki Validi ul., Ufa, Republic of Bashkortostan, 450076

adhamabuayash4@gmail.comhttps://orcid.org/0000-0002-7053-3131НестеровК. М.NesterovK. M.

Нестеров Константин Михайлович, к.ф.-м.н., доцент кафедры Материаловедения и физики металлов,

450076, Россия, Приволжский федеральный округ, Республика Башкортостан, г. Уфа, ул. Заки Валиди, д. 32

Scopus Author ID 36521465900

 Konstantin M. Nesterov, Cand. Sci. (Phys.-Math.), Associate Professor, Materials Science and Metal Physics Department

32, Zaki Validi ul., Ufa, Republic of Bashkortostan, 450076 

Scopus Author ID 36521465900

kmnesterov@mail.ruhttps://orcid.org/0000-0002-6234-7363ИсламгалиевР. К.IslamgalievR. K.

Исламгалиев Ринат Кадыханович, д.ф.-м.н., профессор кафедры Материаловедения и физики металлов

450076, Приволжский федеральный округ, Республика Башкортостан, г. Уфа, ул. Заки Валиди, д. 32.

Scopus Author ID 7004334546

Rinat K. Islamgaliev, Dr. Sci. (Phys.-Math.), Professor, Materials Science and Metal Physics Department

32, Zaki Validi ul., Ufa, Republic of Bashkortostan, 450076

Scopus Author ID 7004334546

rinatis@mail.ruУфимский университет науки и технологийРоссияUfa University of Science and TechnologyRussian Federation202507112025205516524Copyright © Abuayash A., Nesterov K.M., Islamgaliev R.K., 20252025Абуайяш А., Нестеров К.М., Исламгалиев Р.К.Abuayash A., Nesterov K.M., Islamgaliev R.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.finechem-mirea.ru/jour/article/view/2308Objectives

Objectives. High-entropy alloys (HEAs) represent a novel class of metallic materials known for their exceptional mechanical and corrosion-resistant properties. This study investigates the effects of equal channel angular pressing (ECAP) on the microstructure, tensile strength, and corrosion behavior of an equiatomic FeNiMnCr alloy.

Methods

Methods. The alloy was synthesized via arc melting, homogenized, and subjected to up to four ECAP passes at 400°C. Phase composition was analyzed using X-ray diffraction, while microstructural features were examined using scanning electron microscopy and transmission electron microscopy. Mechanical properties were evaluated based on Vickers microhardness and tensile testing, while corrosion resistance was assessed in a 3.5% NaCl solution using potentiodynamic polarization.

Results

Results. The results indicate a significant grain refinement, an increased hardness and strength (by 1013 MPa), and an improved corrosion resistance of the alloy after ECAP processing.

Conclusions

Conclusions. The study demonstrates that ECAP is an effective method for enhancing the performance of FeNiMnCr HEAs. This makes it promising for use in nuclear energy, medicine, and aerospace industry.

Цели

Цели. Исследовать влияние равноканального углового прессования (РКУП) на структуру, прочность и коррозионные свойства сплава FeNiMnCr.

Методы

Методы. Структурные характеристики изучались с помощью рентгенофазового анализа и электронной микроскопии (scanning electron microscopy, transmission electron microscopy). Механические свойства оценивались по микротвердости и испытаниям на растяжение, коррозионная стойкость — потенциодинамическим методом в 3.5% растворе NaCl.

Результаты

Результаты. Установлено, что РКУП приводит к значительному измельчению зерна, увеличению прочности (до 1010 МПа) и снижению плотности коррозионного тока, что говорит об улучшении пассивирующих свойств поверхности.

Выводы

Выводы. РКУП повышает прочность и коррозионную стойкость сплава, что делает его перспективным для применения в ядерной энергетике, медицине и авиационно-космической промышленности.

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The authors declare that there are no conflicts of interest present.