Abstract
Compared with the Al84Ni10Ce6 alloy, the glass forming ability (GFA) of Al84Ni10(Ce3La3) was improved and the melt fragility was decreased through the method of La addition (similar to Ce element), which is in contrary to the conventional rules of dissimilar elements (large atomic size differences) addition. This phenomenon can be understood from the thermodynamics of decrease in ΔGl-x. Furthermore, the effects of other similar RE elements (Pr, Nd, Gd) substitution on GFA and different fragility parameters were investigated in Al84Ni10 (Ce3RE3) alloys, and it was found that smaller M corresponds to a better GFA in these alloys. In addition, it can be also confirmed that m could be just used in an individual alloy system which may attribute to the different formation mechanism of metallic glasses.
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