Numerical modeling of solidification of S.G. cast iron with volume change
Conference
·
OSTI ID:227791
- Technical Univ. of Denmark, Lyngby (Denmark)
A numerical model has been developed to simulate the eutectic solidification of S.G. iron with volume changes in the mushy zone and casting in a previous paper. A microscopic model of eutectic solidification based on the kinetics of nucleation and growth is coupled to a simple description of heat transfer and is coupled to the kinetics of the volume changes of the mushy zone and casting as the function of the temperature, composition, time, and position during solidification. In this paper, a modified Rappaz`s model is proposed to introduce a transient carbon solute boundary layer to describe the eutectic growth under a full equilibrium condition. The calculation result showed that the kinetic growth model strongly influence the development of the microstructure, furthermore, the volume change during the solidification of S.G. iron. Using the new model, the numerical calculation is more convenient with clearly physical meaning and the carbon balance is maintained during the eutectic solidification.
- OSTI ID:
- 227791
- Report Number(s):
- CONF-9509118--; ISBN 0-87339-297-3
- Country of Publication:
- United States
- Language:
- English
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