Abstract
Binary AlLi alloys containing up to 10 wt.% (approximately 30 at.%) lithium were prepared as ribbons by free chill-block melt spinning using a specially constructed apparatus. The change in ribbon morphology and topography as a function of lithium addition, purity of the protective atmosphere and wheel speed was studied by image analysis, scanning electron microscopy, optical microscopy and X-ray diffraction. The preparation atmosphere has a marked effect on the wetting of the liquid AlLi alloy on the chilled casting wheel. The formation of Li 2O and Li 2O 3 affects the ribbon morphology. The addition of lithium increases the reactivity of AlLi liquid and results in a change in ribbon topography. A relationship between the ribbon thickness and wheel speed was established. As expected, an increasing wheel velocity decreases the ribbon thickness.
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