An experimental study of the solidification thermal parameters influence upon microstructure and mechanical properties of Al-Si-Cu alloys

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dc.contributor.authorNascimentoa M.S.
dc.contributor.authorRogerio Franco A.T.
dc.contributor.authorFrajuca C.
dc.contributor.authorNakamoto F.Y.
dc.contributor.authorDos Santos G.A.
dc.contributor.authorCouto A.A.
dc.date.accessioned2024-03-12T23:59:26Z
dc.date.available2024-03-12T23:59:26Z
dc.date.issued2018
dc.description.abstract© 2018 Universidade Federal de Sao Carlos. All rights reserved.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 tensile strength has been reported. In the present investigation, Al-10wt%Si-2wt%Cu and Al-10wt%Si-5wt%Cu alloys were directionally solidified upward under transient heat flow conditions. The experimental results include solidification thermal parameters such as tip growth rate and cooling rate, optical microscopy, volume fraction of the eutectic mixture, primary dendritic arm spacing and ultimate tensile strength. Experimental growth laws of primary dendrite arm spacing as a function of the solidification thermal parameters are proposed. The Hall-Petch mathematical expressions were used to correlate the ultimate tensile strength as a function of the primary dendritic arm spacing. It was found that the alloy with higher copper content had a more refined structure. More refined structures had higher ultimate tensile strength values.
dc.description.issuenumber5
dc.description.volume21
dc.identifier.doi10.1590/1980-5373-MR-2017-0864
dc.identifier.issn1516-1439
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35619
dc.relation.ispartofMaterials Research
dc.rightsAcesso Aberto
dc.subject.otherlanguageAl-Si-Cu alloy
dc.subject.otherlanguageMechanical properties
dc.subject.otherlanguageMicrostructure
dc.subject.otherlanguagePrimary dendrite arm spacing
dc.subject.otherlanguageSolidification
dc.titleAn experimental study of the solidification thermal parameters influence upon microstructure and mechanical properties of Al-Si-Cu alloys
dc.typeArtigo
local.scopus.citations10
local.scopus.eid2-s2.0-85049904142
local.scopus.subjectDirectionally solidified
local.scopus.subjectMathematical expressions
local.scopus.subjectMicrostructure and mechanical properties
local.scopus.subjectPrimary dendrite arm spacings
local.scopus.subjectPrimary dendritic arm spacing
local.scopus.subjectSi-Cu alloys
local.scopus.subjectSolidification structure
local.scopus.subjectUltimate tensile strength
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85049904142&origin=inward
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