Correlation between microstructure, thermal parameters and hardness of a directionally solidified Al-Si-Cu alloy
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2018
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BRAZILIAN MRS MEETING, 17th
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Resumo
Metals solidification involves the transformation of the molten metal back into
the solid state. Solidification structures impact heavily on the final
product’s characteristics. The microstructure effects on metallic alloys properties
have been highlighted in various studies and particularly the dendrite arm
spacing influence upon the mechanical properties such as hardness has been
reported [1-3]. The aim of this work is to obtain correlations between
microstructure and the hardness of Al-10wt%Si-2wt%Cu alloy casting. Initially,
the alloy was formed by aluminum, copper and silicon commercially pure, fused in
a clay-graphite crucible with an electric muffle furnace. After melting the mixture
was poured into stainless steel AISI 304 chill and solidified under upward
unsteady state heat flow conditions. Heat was directionally extracted only
through a water-cooled bottom made of steel (SAE 1020). The experimental
results include solidification thermal parameters such as volume fraction of the
eutectic mixture, primary dendritic arm spacing and hardness.It is found that the
hardness decreases with the increase of the primary dendritic spacing and with
the decrease of the eutectic mixture fraction.
Como referenciar
NASCIMENTO, MAURICIO S.; SANTOS, GIVANILDO A. dos; SOUZA, PAULO E.S.; FRAJUCA, CARLOS; NAKAMOTO, FRANCISCO Y.; SILVA, MARCIO R. da; SANTOS, VINICIUS T. dos; BATALHA, GILMAR F.; COUTO, ANTONIO A. Correlation between microstructure, thermal parameters and hardness of a directionally solidified Al-Si-Cu alloy. In: BRAZILIAN MRS MEETING, 17th, September 16-20, 2018, Natal, RN. Abstract... São Carlos: Aptor Software, 2018. p. 1123-1124. Disponível em: http://repositorio.ipen.br/handle/123456789/30327. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.