Thermo-Metallurgical Modeling of Nodular Cast Iron Cooling Process

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dc.contributor.authorCarazo, Fernando D.
dc.contributor.authorDardati, Patricia M.
dc.contributor.authorCelentano, Diego J.
dc.contributor.authorGodoy, Luis A.
dc.date.accessioned2025-01-24T00:05:37Z
dc.date.available2025-01-24T00:05:37Z
dc.date.issued2012
dc.description.abstractA new numerical model to describe the microstructural evolution of a eutectic nodular cast iron during its cooling is presented. In particular, equiaxial solidification assuming an independent nucleation of austenite and graphite nodules is considered. In this context, the austenite has dendritic growth whereas the graphite grows with a spherical shape. After solidification occurs, the model assumes that the graphite nodules present in the cast iron continue growing since the carbon content in austenite decreases. Once the stable eutectoid temperature is reached, the alloy undergoes the austenite-ferrite transformation. The nucleation of the ferrite takes place at the contour of the spherical graphite nodules where austenite has low carbon concentration. A ferrite shell surrounding the graphite nodules is formed afterward by means of a process governed by carbon diffusion. Then, a ferrite-pearlite competitive transformation occurs when the temperature is below the metastable temperature. This thermo-metallurgical model is discretized and solved by means of the finite element method. The model allows the computation of cooling curves, fraction evolution for each component, and size and distribution of graphite nodules. The present numerical results are compared with experiments using standardized Quick-cup-type cups, and satisfactory numerical predictions of the final microstructure and cooling curves are achieved.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s11663-012-9710-y
dc.identifier.eissn1543-1916
dc.identifier.issn1073-5615
dc.identifier.urihttps://doi.org/10.1007/s11663-012-9710-y
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101848
dc.identifier.wosidWOS:000312342900033
dc.issue.numero6
dc.language.isoen
dc.pagina.final1595
dc.pagina.inicio1579
dc.revistaMetallurgical and materials transactions b-process metallurgy and materials processing science
dc.rightsacceso restringido
dc.subject.ods12 Responsible Consumption and Production
dc.subject.odspa12 Producción y consumo responsable
dc.titleThermo-Metallurgical Modeling of Nodular Cast Iron Cooling Process
dc.typeartículo
dc.volumen43
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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