Nanostructural crystallization of silumins

Марукович, Е. И.; Stetsenko, V. Yu.; Stetsenko, A. V.

doi:10.21122/1683-6065-2022-1-40-42

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Реально эвтектоидные реакции проходят относительно быстро и с выделением тепла. Объяснить процессы, происходящие при эвтектоидных реакциях, можно с позиции наноструктурной кристаллизации сплавов [5,6]. При плавлении сплавы, состоящие из компонентов А и В, распадаются на элементарные нанокристаллы эн A , эн B и свободные атомы a A и a B [7].…”

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Nanostructural phase transformations in eutectoid reactions of binary alloys

Marukovich,

Stetsenko,

Stetsenko

2023

Litʹë metall.

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It is shown that eutectoid reactions of binary alloys are nanostructural processes. The main phase, which decays during the eutectoid reaction, is formed during the crystallization of a metal melt of eutectoid composition. This process is nanostructured. In it, the main elements of microcrystals are the nanocrystals of the alloy components. During the eutectoid reaction, the microcrystals of the main phase disintegrate into nanocrystals. Microcrystals of the other two phases are formed from them.

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Nanostructural phase transformations in eutectoid reactions of binary alloys

Marukovich,

Stetsenko,

Stetsenko

2023

Litʹë metall.

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On modification of silumins

Марукович

Stetsenko

2023

Litʹë metall.

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It has been shown that the elementary crystal cells of the basic products of modification of silumins, aluminum and silicon do not correspond to the principle of structural and dimensional correspondence of Dankov – Konobeevsky. Modifying elements B, Sr, P significantly increase the surface energy of liquid silumins, and Zr and Ti practically do not affect it. Modification of silumins is a nanostructured process. Ti, Zr, B form intermetallides that refine aluminum nanocrystals from demodifying adsorbed hydrogen atoms. Phosphorus, atomically dissolving in silumin, refiners silicon nanocrystals from adsorbed oxygen. Na and Sr form an emulsion and colloid in liquid silumin, which protect eutectic microcrystals of α‑and βSi‑phases from demodifying molecular hydrogen. All these processes increase the concentration of crystallization centers of dendritic microcrystals α‑and βSi‑phase, make them more branched and compact.

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Nanostructural crystallization of silumins

Cited by 2 publications

References 2 publications

Nanostructural phase transformations in eutectoid reactions of binary alloys

Nanostructural phase transformations in eutectoid reactions of binary alloys

On modification of silumins

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