Abstract

The effect of rapid solidification on the microstructure of Al–8 Ce, Al–20 Ce and Al–36.6 Ce (wt%) alloys has been investigated using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. A microstructure selection map has been established for the rapidly solidified Al-rich Al–Ce alloys. Rapid solidification has no effect on the phase constitution but has a marked effect on the microstructure of the Al–8 Ce and Al–20 Ce alloys. For the Al–36.6 Ce alloy, however, rapid solidification has a significant effect on both the microstructure and the phase constitution.

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