Solidification and phase equilibria in the Fe-C-Cr-NbC system |
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| Authors: | J. A. R. Gregolin N. G. Alcantara |
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| Affiliation: | 1. Materials Engineering Department, Federal University of S?o Carlos, S?o Carlos, SP, Brazil
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| Abstract: | A solidification model is developed and experimentally checked for Fe-C-Cr-Nb alloys in the white cast irons range. It is based on a partial quaternary Fe-C-Cr-NbC phase diagram and predicts the possible solidification paths for the alloys containing γ, with (Fe,Cr)7C3 and NbC as the microconstituents at room temperature. The dendritic γ to massive (Fe,Cr)7C3 transition in experimental alloy microstructures with NbC contents up to 22 pet is explained by this model. Thermal analysis is also used to compare the solidification paths and model approach. |
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