Analysis of ductile cast iron solidification: numerical simulation and experimental validation

P. M. DARDATI; D. J. CELENTANO; L. A. GODOY; A. A. CHIARELLA; B. J. SCHULZ

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH

W. S. Maney & Son Ltd.

Lugar: Londres; Año: 2009 vol. 22 p. 390 - 400

1364-0461

This paper presents an experimental and numerical study of the solidification process of ductilecast iron under slightly hypereutectic conditions. The material thermo-microstructural behaviour is measured in tests performed using standardized cups. Cooling curves at the centre of the cupwere recorded, and metallographic studies were carried out to investigate the number and size of graphite nodules at the end of the process. Different models were tested: a model based on a uninodular theory and two models which represent the multi-nodular theory. The cooling curvespredicted by these models are in good agreement with the experimental measurements. Somescatter is found, however, in the numerical?experimental comparison for the graphite noduledensity at different points of the sample.