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Journal of Composite Materials
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Numerical and Experimental Study of Solidification Phenomena in Pressure-Infiltrated Metal-Matrix Composite Casting

O. J. Ilegbusi

Department of Mechanical, Industrial and Manufacturing Engineering, Northeastern University, 334 Snell Eng. Center, Boston, MA 02115

J. Yang

Department of Mechanical, Industrial and Manufacturing Engineering, Northeastern University, 334 Snell Eng. Center, Boston, MA 02115

R. Mason

Metal Matrix Cast Composites Inc., Waltham, MA 02154

J. A. Cornie

Metal Matrix Cast Composites Inc., Waltham, MA 02154

The solidification behavior in a pressure-infiltrated metal-matrix composite casting system is investigated experimentally and theoretically. The temperature history at various locations within the casting are recorded in situ with a Lab VIEW Data Acquisition system. A correlation established for the heat transfer coefficient at high pressure is used to express the thermal boundary condition on the mold surface. The predicted temperature profiles are in good agreement with the experimental data. The results also indicate that high pressure is required for only a fraction of the duration of the casting.

Key Words: solidification • pressure-infiltrated MMC casting • model.

Journal of Composite Materials, Vol. 33, No. 14, 1276-1287 (1999)
DOI: 10.1177/002199839903301401
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