Abstract
A relationship is established between the heat transfer coefficient on the external surface of a mold and the ambient temperature and pressure within the operating range typical of pressure-infiltration casting of metal-matrix composites. This relationship is based on existing data and correlation for the thermo-physical properties of the ambient nitrogen. The predicted temperature profiles are in good agreement with the experimental data obtained for a metal-matrix composite casting process. The application of the established relationship is carried beyond the experimental evidence to predict the solidification pattern in the pressure-casting system.
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