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Journal of Materials Engineering and Performance

Erschienen in:

05.10.2016

Microstructure and Properties of Secondary Al-12%Si Alloy Rapidly Quenched from the Melt

verfasst von: Alexander S. Chaus, Evgeny I. Marukovich, Martin Sahul

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 11/2016

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Abstract

In this study, the effect of rapid quenching from the melt is investigated on the solidification microstructure and tensile properties of a secondary Al–12%Si alloy, which was cast in ingots measuring 45 mm in diameter and 200 mm in height. Compared with conventional casting into metallic molds, significant refinement of all the microstructural constituents was observed under the effect of rapid quenching, including primary α-Al, primary silicon, the eutectic and iron-rich intermetallics. The coarse plate-like to fine fibrous transition of eutectic silicon, and the change of coarse plate and needle-shaped iron-rich intermetallic phase particles to a well-dispersed morphology accompanied the microstructure refinement. Both the microstructure refinement and the favorable morphological changes of the phases resulted in the enhanced of tensile properties and more ductile fracture behavior of the alloy. T2 heat treatment additionally increases elongation of the rapidly quenched alloy.

Vorheriger Artikel Microstructural Characteristic of the Al-Fe-Cu Alloy During High-Speed Repetitive Continuous Extrusion Forming

Nächster Artikel Effect of Oxide Inclusions Modification During Electroslag Remelting on Primary Carbides and Toughness of a High-Carbon 17 mass% Cr Tool Steel

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Titel: Microstructure and Properties of Secondary Al-12%Si Alloy Rapidly Quenched from the Melt
verfasst von: Alexander S. Chaus
Evgeny I. Marukovich
Martin Sahul
Publikationsdatum: 05.10.2016
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 11/2016
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-016-2367-y

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