Experimental investigations and DICTRA® simulation of sigma phase formation in a duplex stainless steel

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dc.contributor.authorMorais L.D.C.
dc.contributor.authorMagnabosco R.
dc.date.accessioned2019-08-20T00:17:37Z
dc.date.available2019-08-20T00:17:37Z
dc.date.issued2017
dc.description.abstract© 2017 Elsevier LtdSigma phase formation in an UNS S31803 duplex stainless steel aged at 940 °C was evaluated by computational simulation in DICTRA® software, using MOB2 diffusion database and TCFE8 thermodynamic database. Simulation results were compared to experimental tests. Two models were tested in DICTRA® software: in model 1 sigma phase are placed between ferrite and austenite, and in model 2 sigma is placed at one side of ferrite region, and austenite on the other. The volume fraction of sigma and ferrite phases obtained in model 1 showed adherence to the experimental results up to 7200 s (2 h) of simulation, indicating the ability of the model in the description of early stages of sigma formation. Model 2 showed good agreement with experimental data up to 86,400 s (24 h) of simulation. The composition profile obtained by the simulation of the model 1 represented better the impoverishment in Cr and Mo in ferrite/sigma and austenite/sigma interfaces, while the profiles obtained by the simulation of model 2 described better the partition of the chemical elements between austenite and ferrite during sigma formation.
dc.description.firstpage214
dc.description.lastpage218
dc.description.volume58
dc.identifier.citationMORAIS, LUARA DA COSTA; Magnabosco, Rodrigo. Experimental investigations and DICTRA ® simulation of sigma phase formation in a duplex stainless steel. CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, v. 58, p. 214-218, 2017.
dc.identifier.doi10.1016/j.calphad.2017.07.006
dc.identifier.issn0364-5916
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/2291
dc.relation.ispartofCalphad: Computer Coupling of Phase Diagrams and Thermochemistry
dc.rightsAcesso Restrito
dc.subject.otherlanguageComputational simulation
dc.subject.otherlanguageDICTRA®
dc.subject.otherlanguageDuplex stainless steel
dc.subject.otherlanguageSigma phase
dc.titleExperimental investigations and DICTRA® simulation of sigma phase formation in a duplex stainless steel
dc.typeArtigo
fei.scopus.citations18
fei.scopus.eid2-s2.0-85025143729
fei.scopus.subjectComposition profile
fei.scopus.subjectComputational simulation
fei.scopus.subjectDuplex stainless steel
fei.scopus.subjectExperimental investigations
fei.scopus.subjectSigma phase
fei.scopus.subjectSigma phase formation
fei.scopus.subjectSimulation of models
fei.scopus.subjectThermodynamic database
fei.scopus.updated2024-03-04
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85025143729&origin=inward
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