Flux assisted dispersion of ceramic phases in molten aluminum alloys
- Brunel Univ., Uxbridge (United Kingdom). Dept. of Materials Technology
Without the use of a flux, only a poor dispersion of ceramic phase can be achieved. A molten-flux-assisted ceramic phase dispersion technique for producing aluminum alloy metal-matrix composites has been developed. In this paper, the authors report the physical chemistry for the dispersion of TiB{sub 2} in molten aluminum. In particular, aspects of the interfacial energy and the thermodynamics of the dispersion reactions are briefly discussed for enhancing the volume of dispersion phase in the molten metal and for controlling their morphology. This investigation also addresses the role of molten flux in the fabrication of Al-alloy mmc using a casting technique. The morphological aspects of the dispersion are explained on the basis of the classical theory of nucleation.
- OSTI ID:
- 367616
- Report Number(s):
- CONF-960202--; ISBN 0-87339-310-4
- Country of Publication:
- United States
- Language:
- English
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