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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

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