Interface morphology during crystallization. II. Single filament, unconstrained growth from a binary alloy melt
Journal Article
·
· Acta Metall.; (United States)
A theoretical model is developed to calculate the growth rate and tip curvature of a non-isothermal, non-isoconcentrate needle filament which is growing from a supercooled melt. It is predicted that at small alloy content, the presence of the solute decreases the non-isothermality of the filament and thus may cause the growth rate to increase. At large alloy contents, however, the solute transport consumes an increasingly larger proportion of the total driving force so that the growth rate decreases. A good correlation is obtained between theory and experimental data in the tin--lead system.
- Research Organization:
- Ames Lab., IA
- OSTI ID:
- 6517642
- Journal Information:
- Acta Metall.; (United States), Vol. 26
- Country of Publication:
- United States
- Language:
- English
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