Particle Engulfment and Pushing By Solidifying Interfaces

The major scientific objectives of this investigation were as follows:
· to enhance the fundamental understanding of dynamics of insoluble particles at the solid-liquid interface;
· to obtain experimental data for the critical velocity of particle engulfment in a convection-free environment;
· to validate present theoretical models;
· to improve the understanding of physics associated with solidification of liquid metals - ceramic particles mixtures;
· to investigate aspects of melt processing of particulate metal matrix composites in the unique microgravity environment which will yield some vital information for terrestrial applications;
· to further develop the elements of the numerical model into a comprehensive model that takes into account convection effects.