Effects of Solidification Thermal Variables on the Microstructure and Hardness of the Silicon Aluminum Bronze Alloy CuAl6Si2

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dc.contributor.authorNascimento P.H.T.D.
dc.contributor.authorSantos V.T.D.
dc.contributor.authorLuca R.D.
dc.contributor.authorSilva M.R.D.
dc.contributor.authorLobo F.G.
dc.contributor.authorTeram R.
dc.contributor.authorNascimento M.S.
dc.contributor.authorCozza R.C.
dc.contributor.authorCouto A.A.
dc.contributor.authorSantos G.A.D.
dc.contributor.authorFilho A.D.A.M.
dc.date.accessioned2024-12-01T06:10:47Z
dc.date.available2024-12-01T06:10:47Z
dc.date.issued2024
dc.description.abstract© 2024 by the authors.The properties of the final product obtained by solidification directly result from the thermal variables during solidification. This study aims to analyze the influence of thermal solidification variables on the hardness, microstructure, and phases of the CuAl6Si2 alloy. The material was solidified using unidirectional solidification equipment under non-stationary heat flow conditions, where heat extraction is conducted through a water-cooled graphite base. The thermal solidification variables were extracted using a data acquisition system, and temperature was monitored at six different positions, with cooling rates ranging from 217 to 3 °C/min from the nearest to the farthest position from the heat extraction point. An optical microscope, scanning electron microscope (SEM), and X-ray diffraction (XRD) were used to verify the fusion structure and determine the volumetric fraction of the formed phases. The XRD results showed the presence of β phases, α phases, and possible Fe3Si2 and Fe5Si3 intermetallics with different morphologies and volumetric fractions. Positions with lower cooling rates showed an increased volume fraction of the α phase and possible intermetallics compared to positions with faster cooling. High cooling rates increased the Brinell hardness of the alloy due to the refined and equiaxed β metastable phase, varying from 143 HB to 126 HB for the highest and lowest rates, respectively.
dc.description.issuenumber10
dc.description.volume14
dc.identifier.doi10.3390/met14101134
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/39795
dc.relation.ispartofMetals
dc.rightsAcesso Aberto
dc.subject.otherlanguagemicrostructure
dc.subject.otherlanguagesilicon aluminum bronze
dc.subject.otherlanguagethermal variables
dc.subject.otherlanguageunidirectional solidification
dc.titleEffects of Solidification Thermal Variables on the Microstructure and Hardness of the Silicon Aluminum Bronze Alloy CuAl6Si2
dc.typeArtigo
local.scopus.citations2
local.scopus.eid2-s2.0-85207676781
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85207676781&origin=inward
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