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Metallurgist
Erschienen in: Metallurgist 3-4/2022

08.08.2022

Processes of Obtaining Granular Materials from Al–Zn–Mg–Cu Aluminum Alloys Using Ultra-Fast Granular Crystallization

verfasst von: M. V. Zharov

Erschienen in: Metallurgist | Ausgabe 3-4/2022

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Abstract

This paper presents the results of studies into the process of obtaining granular materials from high-strength aluminum alloys of the Al–Zn–Mg–Cu system by melt centrifugation with ultra-high granular cooling rates. The concept of a “vapor jacket” is introduced to describe a vapor layer appearing between the granular body and the cooling fluid, which impedes heat removal and represents an obstacle for an increase in the crystallization rate due to a smaller thermal conductivity of water vapors. A technology for increasing the granular crystallization rate by constant removal of a vapor layer is proposed. It was established that an increase in the rate of heat removal from crystallized granules and, consequently, in the crystallization rate leads to an increase in the strength characteristics of granular Al–Zn–Mg–Cu aluminum alloys. The described method, which is based on the removal of a vapor layer formed around a granule, seems to be the only feasible solution to increasing further the cooling rate and, consequently, the crystallization rate.
Vorheriger Artikel Application of an Analytical Calculation Methodology in the Development of Pipeline Fitting Welding Modes
Nächster Artikel Comparative Studies into Composition and Properties of FPR-23 and Biomag Covering and Degassing Fluxes

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Metadaten
Titel
Processes of Obtaining Granular Materials from Al–Zn–Mg–Cu Aluminum Alloys Using Ultra-Fast Granular Crystallization
verfasst von
M. V. Zharov
Publikationsdatum
08.08.2022
Verlag
Springer US
Erschienen in
Metallurgist / Ausgabe 3-4/2022
Print ISSN: 0026-0894
Elektronische ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-022-01327-w

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