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Type: Artigo de periódico
Title: Dendritic solidification microstructure affecting mechanical and corrosion properties of a Zn4Al alloy
Author: Osorio, WR
Freire, CMA
Garcia, A
Abstract: In the present article some important trends have been shown regarding the relationship between solidification variables, microstructure, mechanical and corrosion properties of Zn-4 wt%Al alloy castings. The aim of the present work is to investigate the influence of heat transfer solidification variables on the microstructure of Zn-4 wt%Al castings and to develop correlations with mechanical and corrosion properties. Experimental results include transient metal/mould heat transfer coefficient (hi), secondary dendrite arm spacings (lambda 2), corrosion potential (E-Corr), corrosion rate (i(Corr)), ultimate tensile strength (sigma(u)) and yield strength (sigma(y)) as a function of solidification conditions imposed by the metal/mould system. It was found that a structural dendritic refinement provides both higher corrosion resistance and better mechanical properties for a hypoeutectic Zn4Al alloy. (c) 2005 Springer Science + Business Media, Inc.
Country: Holanda
Editor: Springer
Citation: Journal Of Materials Science. Springer, v. 40, n. 17, n. 4493, n. 4499, 2005.
Rights: fechado
Identifier DOI: 10.1007/s10853-005-0852-z
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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