Use of DICTRA® simulations to support carbide particle growth study in NbC-Ni cemented carbide

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dc.contributor.authorMORAIS, LUARA DA COSTA
dc.contributor.authorBENEDUCE, FLAVIO
dc.contributor.authorRodrigo Magnabosco
dc.contributor.authorRIBEIRO, TIAGO RAMOS
dc.contributor.authorOrcidhttps://orcid.org/0000-0003-0559-7224
dc.date.accessioned2021-10-28T17:44:54Z
dc.date.available2021-10-28T17:44:54Z
dc.date.issued2020-07-24
dc.description.abstractCarbide particle growth observed in a NbC-12%Ni (mass percent) sample sintered at 1420 °C was discussed using DICTRA® simulation of spherical particles immersed in a Ni matrix. It is possible to describe the liquid formation during sintering using a model that assumes a spherical region of NbC, with radius equivalent to the NbC particle distribution, surrounded by nickel. NbC volume fraction was obtained for different simulation times allowing the evaluation of the dissolution behavior in different particle sizes. Small carbides (around 1 μm in diameter) suffered total dissolution, while major carbides (10 μm in diameter) did not dissolve during the simulation. Chemical content evidenced that Nb and C from carbide dissolution segregated to liquid phase reaching levels up to 15 and 2%, respectively, showing the availability of this elements to re-precipitate in non-dissolved carbides during cooling from sintering temperature. The simulations indicate that carbide particle growth observed in NbC-12%Ni sintered sample can be a result of dissolution and re-precipitation mechanism.
dc.description.firstpage105373
dc.description.lastpage105380
dc.description.volume94
dc.identifier.citationMORAIS, L. C.; BENEDUCE, F.; MAGNABOSCO, R.; RIBEIRO, T. R. Use of DICTRA® simulations to support carbide particle growth study in NbC-Ni cemented carbide. International Journal of Refractory Metals & Hard Materials, v. 94, p. 105373-105380, 2020.
dc.identifier.doi10.1016/j.ijrmhm.2020.105373
dc.identifier.issn0263-4368
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/3417
dc.relation.ispartofINTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
dc.rightsAcesso Restrito
dc.subjectcemented carbide
dc.subjectniobium carbide
dc.subjectLiquid-phase sintering
dc.subjectDICTRA® simulation
dc.titleUse of DICTRA® simulations to support carbide particle growth study in NbC-Ni cemented carbidept_BR
dc.typeArtigopt_BR
fei.scopus.citations3
fei.scopus.eid2-s2.0-85090418600
fei.scopus.updated2024-03-04
fei.source.urlhttps://www.sciencedirect.com/science/article/pii/S0263436820302493?via%3Dihub
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