Simulation of solidification paths in high chromium white cast irons for wear applications

Simulation of solidification paths in high chromium white cast irons for wear applications

Autor Schon, C. G. Google Scholar
Sinatora, A. Google Scholar
Instituição Max Planck Inst Eisenforsch GmbH
Universidade Federal de São Paulo (UNIFESP)
Resumo Thermodynamic calculations of the solidification paths in the Fe-Si-Cr-C system using the CALPHAD approach have been used for the interpretation of the solidification microstructures of high chromium white cast irons containing high silicon contents. the results show a reasonable agreement between experiments and calculations for alloys up to 2 wt% Si. the results suggests that the stability of the cementite phase is underestimated in the thermodynamic database,The calculations predict a change in the topology of the phase diagram, with the cementite primary field disappearing in favour of a new ternary eutectic involving liquid, austenite, graphite and M7C3 carbide, this is partially in agreement with the observed microstructures for the alloys containing 4 wt%Si. the calculations predict the existence of a complex invariant peritectic reaction involving liquid, graphite, austenite, cementite and M7C3 carbide in the Fe-Si-Cr-C system.
Idioma Inglês
Data de publicação 1998-12-01
Publicado em Calphad-computer Coupling of Phase Diagrams and Thermochemistry. Oxford: Pergamon-Elsevier B.V., v. 22, n. 4, p. 437-448, 1998.
ISSN 0364-5916 (Sherpa/Romeo, fator de impacto)
Publicador Elsevier B.V.
Extensão 437-448
Fonte http://dx.doi.org/10.1016/S0364-5916(99)00003-6
Direito de acesso Acesso restrito
Tipo Artigo
Web of Science WOS:000078989400001
Endereço permanente http://repositorio.unifesp.br/handle/11600/25987

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