Vertical and horizontal directional solidification of Zn-Al and Zn-Ag diluted alloys

Zinc-Aluminum and Zinc-Silver alloys were solidified in horizontal and vertical form and the results obtained analyzed. Thermal parameters such as the cooling rates, the liquidus and solidus interphase velocities, and the temperature gradients were determined. The velocity of the liquidus interphase...

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Detalhes bibliográficos
Autores: Gueijman, Sergio Fabian, Schvezov, Carlos Enrique, Ares, Alicia Esther
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/57078
Acesso em linha:http://hdl.handle.net/11336/57078
Access Level:acceso abierto
Palavra-chave:Columnar-To-Equiaxed Transition
Horizontal Directional Solidification
Vertical Directional Solidification
Zinc-Aluminum Alloys
Zinc-Silver Alloys
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
Descrição
Resumo:Zinc-Aluminum and Zinc-Silver alloys were solidified in horizontal and vertical form and the results obtained analyzed. Thermal parameters such as the cooling rates, the liquidus and solidus interphase velocities, and the temperature gradients were determined. The velocity of the liquidus interphase is greater than or sometimes equal to the velocity of the solidus interphase. In the vertical setup, columnar-to-equiaxed (CET) grain transition was obtained. CET does not occur in the horizontal one-directional solidification when critical minimum gradients reach values greater than 0.1 K/mm.