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http://elar.urfu.ru/handle/10995/27405
Название: | Specific features of cast high-entropy AlCrFeCoNiCu alloys produced by ultrarapid quenching from the melt |
Авторы: | Ivchenko, M. V. Pushin, V. G. Uksusnikov, A. N. Wanderka, N. Kourov, N. I. |
Дата публикации: | 2013 |
Библиографическое описание: | Specific features of cast high-entropy AlCrFeCoNiCu alloys produced by ultrarapid quenching from the melt / M. V. Ivchenko, V. G. Pushin, A. N. Uksusnikov [et al.] // Physics of Metals and Metallography. — 2013. — Vol. 114. — № 6. — P. 503-513. |
Аннотация: | Results of studying structural and phase transformations that occur in the cast high-entropy equiatomic AlCrFeCoNiCu alloy after ultrarapid quenching from the melt in an inert atmosphere (RQM) and various isothermal treatments are presented for the first time. The investigations have been performed using analytical, transmission and scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction structure and phase analyses, as well as measurements of the nanohardness, microhardness, and elastic moduli. It has been found that an ultrafine-grained structure is formed in this alloy during RQM. Already during quenching and, especially, during subsequent annealing, the alloy undergoes decomposition, which is accompanied by the precipitation in the bcc (B2) matrix of some nanosized phases, predominantly of equiaxed morphology, both atomically ordered (B2) and disordered (A2), with various chemical compositions. All nanophases are multicomponent solid solutions and are enriched in a few elements, which leads to a pronounced nanomodulation of the elemental and phase compositions over the alloy bulk, identified, in particular, from the presence of satellites in the vicinity of some reflections in selected-area electron diffraction patterns. © 2013 Pleiades Publishing, Ltd. |
Ключевые слова: | CHEMICAL COMPOSITION ENTROPY OF MIXING HIGH-ENTROPY EQUIATOMIC ALLOY NANOPHASES SPINODAL DECOMPOSITION STRUCTURAL AND PHASE TRANSFORMATIONS ULTRARAPID QUENCHING CHEMICAL COMPOSITIONS ENERGY DISPERSIVE X RAY SPECTROSCOPY ENTROPY OF MIXING MULTICOMPONENT SOLID SOLUTIONS NANOPHASES SELECTED AREA ELECTRON DIFFRACTION PATTERN ULTRAFINE GRAINED STRUCTURE X-RAY DIFFRACTION STRUCTURE ALLOYS ELECTRON DIFFRACTION ENTROPY PHASE TRANSITIONS QUENCHING SCANNING ELECTRON MICROSCOPY SPINODAL DECOMPOSITION X RAY DIFFRACTION X RAY SPECTROSCOPY PRECIPITATION (CHEMICAL) |
URI: | http://elar.urfu.ru/handle/10995/27405 |
Идентификатор РИНЦ: | 20441566 |
Идентификатор SCOPUS: | 84879475981 |
Идентификатор WOS: | 000320406400006 |
Идентификатор PURE: | 906713 |
ISSN: | 0031-918X 1555-6190 |
DOI: | 10.1134/S0031918X13060057 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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scopus-2013-0558.pdf | 3,64 MB | Adobe PDF | Просмотреть/Открыть |
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