The influence of scandium in effecting fragile to strong glass transition in aluminium-based alloys

摘要

The "fragile"-"strong glass" transition in Al-based alloys is observed as a function of Sc content. The Sc-bearing alloys suffer glass transition as well as Sc-free Al0.84Y0.09Ni0.05Co0.02 alloy, however, the value of DeltaC(p) decreases drastically and comes within the variation of the baseline at higher than 2 at. % of Sc. The studied glasses are free from pre-existing nuclei. (C) 2004 American Institute of Physics.