Solidification of Highly Undercooled Liquid Droplets
Final rept. 1 Jul 1986-30 Jun 1989
WISCONSIN UNIV MADISON
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Research has been focused upon metastable phase formation and the controlling phase selection reactions, the evolution of solidification microstructure under the combined influence of undercooling, recalescence and external cooling and several other aspects of undercooled alloy solidification and product structure stability. The experimental approach that has been applied to carry out these studies is based on the droplet emulsion technique. With this method, samples may be produced which exhibit large undercoolings prior to solidification during slow cooling 10-30 deg Cmin and which may be maintained in the metastable undercooled state for extended time periods without the intervention of crystallization.
- Metallurgy and Metallography