Al-AlN Composites Elaborated by Squeeze Casting

Al-AlN composites have been fabricated by the squeeze casting process at the Technical University of Clausthal (Germany). A 2024 aluminum alloy with a preform made of AlN powder (ESK) was used. Preliminary microstructural observations were performed by SEM and TEM. Dense composites were obtained. Th...

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Bibliographic Details
Published in:Key engineering materials 1997-01, Vol.132-136 (2), p.1006-1009
Main Authors: Vicens, Jean, Mordike, B.L., Boitier, G., Chermant, Jean-Louis, Chedru, M.
Format: Article
Language:English
Subjects:
Applied sciences
Dispersion hardening metals
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
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Summary:Al-AlN composites have been fabricated by the squeeze casting process at the Technical University of Clausthal (Germany). A 2024 aluminum alloy with a preform made of AlN powder (ESK) was used. Preliminary microstructural observations were performed by SEM and TEM. Dense composites were obtained. They exhibit clean interfaces (with few porosity and a small amount of Al sub 2 Cu precipitates). Aluminum matrix and aluminum-aluminum nitride interfaces were characterized by HREM. The Vickers microhardness of the composites has a constant value in the AlN rich region and was found close to 300.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.132-136.1006