Application of Solidification Theory to Rapid Solidification Processing
Semi-annual technical rept. 1 Apr-30 Sep 1979
NATIONAL BUREAU OF STANDARDS WASHINGTON DC METAL SCIENCE AND STANDARDS DIV
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Work is reported on the following areas of rapid solidification processing 1 Microsegregation and Stability at the Solidification Interface, 2 Glass Formation by Rapid Cooling of Eutectic Systems, 3 Compositional Limits Imposed by Thermodynamics during Rapid Solidification and Relative Stability of Heterogeneous Microstructures. The theory of rapid solidification was investigated to determine whether major aspects of rapid solidification processes can be explained by conventional solidification theory and to examine non-equilibrium effects which can arise. In particular, segregation effects, glass-forming tendencies, and rules governing the formation of equilibrium and non-equilibrium phases, including alloy composition limits, reaction sequences and metastable phase formation, will be investigated.
- Industrial Chemistry and Chemical Processing
- Properties of Metals and Alloys
- Fabrication Metallurgy