Structural Transformations upon Annealing of a Cold-Worked High-Entropy Al0.3CoCrFeNi Alloy | Sciact - CRIS-система Института катализа

Structural Transformations upon Annealing of a Cold-Worked High-Entropy Al0.3CoCrFeNi Alloy Научная публикация

Журнал

Steel in Translation
ISSN: 0967-0912 , E-ISSN: 1935-0988

Вых. Данные

Год: 2022, Том: 52, Номер: 8, Страницы: 724-730 Страниц : 7 DOI: 10.3103/s0967091222080071

Ключевые слова

high-entropy alloys, Al0.3CoCrFeNi alloy, cold rolling, annealing, recrystallization, microhardness, Electron backscatter diffraction (EBSD), synchrotron X-ray diffraction,

Авторы

Ivanov I.V. ¹ , Emurlaev K.I. ¹ , Kuper K.E. ² , Safarova D.E. ¹ , Bataev I.A. ¹

Организации

1	Novosibirsk State Technical University (Abbreviation: NSTU)
2	Boreskov Institute of Catalysis of the Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia

Информация о финансировании (1)

Российский научный фонд

20-73-10215 (АААА-А20-120101390032-8)

The paper considers the features of structural transformations during annealing of a high-entropy Al0.3CoCrFeNi alloy. The ingots obtained by argon-arc melting were subjected to cold rolling with a reduction ratio of 50%. The billets were annealed in a furnace for 4 hours at temperatures of 200, 400, 600, 800, and 1000°C. The samples obtained by the described method were studied using the methods of synchrotron X-ray diffraction in the transmission mode and diffraction of backscattered electrons. The results indicate that, up to a temperature of 600°C, the structure of the alloys is represented by a single phase with a fcc lattice. When alloys are annealed at temperatures of 800 and 1000°C, the phase composition is characterized by the presence of two phases: a disordered phase with a fcc lattice and an ordered phase with a primitive cubic lattice. At temperatures above 800°C, annealing of alloys is accompanied by the development of recrystallization processes. After annealing at 800°C, the relative proportion of microvolumes characterized by an interangular misorientation of more than 10° was 20%. After annealing at 1000°C, it was 65%. The microhardness of the samples under study increases with an increase in temperature up to 600°C and decreases with a further increase in temperature. An analysis of the width of the diffraction maxima using the methods of profile analysis of diffraction patterns indicates an increase in the distortions of the crystal lattice of the disordered phase. This behavior may be related to the precipitation of nanosized inclusions in the matrix of the main phase.

Ivanov I.V. , Emurlaev K.I. , Kuper K.E. , Safarova D.E. , Bataev I.A.
Structural Transformations upon Annealing of a Cold-Worked High-Entropy Al0.3CoCrFeNi Alloy
Steel in Translation. 2022. V.52. N8. P.724-730. DOI: 10.3103/s0967091222080071 Scopus РИНЦ OpenAlex

Иванов И.В. , Эмурлаев К.И. , Купер К.Э. , Сафарова Д.Э. , Батаев И.А.
Структурные преобразования при отжиге холоднодеформированного высокоэнтропийного сплава Al0.3CoCrFeNi
Известия высших учебных заведений. Черная металлургия. 2022. Т.65. №8. С.539-547. DOI: 10.17073/0368-0797-2022-8-539-547 Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	9 мар. 2022 г.
Принята к публикации:	12 мая 2022 г.
Опубликована в печати:	1 авг. 2022 г.
Опубликована online:	19 дек. 2022 г.

Scopus:	2-s2.0-85144313346
РИНЦ:	59475572
OpenAlex:	W4312577837

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