Preprint
Communication

Feeding and Pore Formation in Semisolid Metal Casting

This version is not peer-reviewed.

Submitted:

02 October 2020

Posted:

05 October 2020

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Abstract
Semisolid casting can provide excellent castings, but the nature of the pore-forming mechanisms has not been properly clarified. In the current communication, it was suggested that hydrogen precipitated during slurry making might have a decisive role in the formation of both gas and shrinkage porosity. Intensive stirring at the end of the slurry making process may act as a degassing step. Without the intense stirring, structures of primary slurry particles form around the hydrogen pores, strongly affecting pore formation and feeding during the intensification stage.
Keywords: 
Semisolid casting; porosity, hydrogen, shrinkage, feeding; stirring; degassing
Subject: 
Chemistry and Materials Science  -   Biomaterials
Copyright: This open access article is published under a Creative Commons CC BY 4.0 license, which permit the free download, distribution, and reuse, provided that the author and preprint are cited in any reuse.

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