MICROSTRUCTURE EVOLUTION OF IMMISCIBLE ALLOYS DURING COOLING THROUGH THE MISCIBILITY GAP

Authors
ZHAO JZ RATKE L FEUERBACHER B
Citation
Jz. Zhao et al., MICROSTRUCTURE EVOLUTION OF IMMISCIBLE ALLOYS DURING COOLING THROUGH THE MISCIBILITY GAP, Modelling and simulation in materials science and engineering, 6(2), 1998, pp. 123-139
Citations number
36
Categorie Soggetti
Material Science","Physics, Applied
Journal title
Modelling and simulation in materials science and engineering → ACNP
ISSN journal
09650393
Volume
6
Issue
2
Year of publication
1998
Pages
123 - 139
Database
ISI
SICI code
0965-0393(1998)6:2<123:MEOIAD>2.0.ZU;2-B
Abstract
A numerical model is developed describing the very fast process of mic rostructure evolution under the common action of nucleation and diffus ional growth of minority phase droplets during cooling of a hypermonot ectic alloy through the miscibility gap. The model is validated compar ing it with an analytical solution obtained with some simplifying assu mptions and then applied to predict the microstructure evolution in AI -Pb alloy in a real casting situation. The numerical model reflects th e real physical processes well and also yields some general relations applicable to other immiscible alloys.