Formation of the minor phase shell on the surface of hypermonotectic alloy powders

The microstructure evolution in an atomized hypermonotectic alloy drop is calculated. The results indicate that the formation of the minor phase shell on the surface of the powder is due to the heterogeneous nucleation of the minor phase droplets on the atomized drop surface and the resultant diffus...

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Bibliographic Details
Published in:Scripta materialia 2006, Vol.54 (2), p.247-250
Main Author: Zhao, J.Z.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Immiscible alloy
Metals. Metallurgy
Microstructure
Nucleation
Powder
Solidification
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Summary:The microstructure evolution in an atomized hypermonotectic alloy drop is calculated. The results indicate that the formation of the minor phase shell on the surface of the powder is due to the heterogeneous nucleation of the minor phase droplets on the atomized drop surface and the resultant diffusional transfer of solute during the liquid–liquid phase transformation.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.09.038