Glass forming ability criteria for La–Al–(Cu, Ni) alloys

Criteria for evaluating the glass forming ability (GFA) of La–Al–(Cu, Ni) alloys were studied. The GFA criteria can be categorized into two types, according to whether the liquidus temperature Tl is included in the formula or not. The Tl inclusive criteria generally predict a maximum in GFA at the eutectic composition at which Tl is a minimum. However, for La–Al–(Cu, Ni) alloys, the best GFA does not correspond to the eutectic. The paper discusses the suggestion that the solidification temperature Ts should be used instead of Tl for evaluating the GFA of La–Al–(Cu, Ni) alloys.