Study of shrinkage porosity in spheroidal graphite cast iron
- Tenaglia, Nicolás Emanuel
- Boeri, Roberto Enrique
- Rivera, Graciela Leonor
- Massone, Juan Miguel
DOIAbstract
This study aims at identifying the relationship between the shrinkage cavities and the solidification structure in spheroidal graphite cast iron. Cast samples specially designed to contain shrinkage cavities were used. The solidification macrostructure was revealed by using the Direct Austempering After Solidification method (DAAS) while the solidification microstructure was revealed by using color etching. At the midsection of the pieces, the shrinkage cavities and the solidification structure were observed jointly. The study showed that the classification of shrinkage porosity found in literature does not correspond to the ductile iron solidification model recognized by most of the scientific community. Early solidification models, and th...
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