Glass-forming ability determined by the atomic interaction potential for the Ni-Mo system

Abstract

Employing an n-body Ni-Mo potential, a molecular dynamics simulation is performed to study the crystal-to-amorphous transition of Ni- and Mo-rich solid solutions with increasing Mo and Ni content, respectively. It is found that the Ni- and Mo-rich supersaturated solid solutions become unstable and transform into amorphous states when the Mo and Ni contents are beyond the critical concentrations at 21 at. % of Mo and 25 at. % of Ni, respectively. The possible correlation of the calculated concentrations with the glass-forming ability of the Ni-Mo system is also discussed.