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

Employing an n-body Ni-Mo potential, a molecular dynamics simulation is per formed to study the crystal-to-amorphous transition of Ni- and Mo-rich soli d solutions with increasing Mo and Ni content, respectively. It is found th at the Ni- and Mo-rich supersaturated solid solutions become unstable and t ransform into amorphous states when the Mo and Ni contents are beyond the c ritical concentrations at 21 at. % of Mo and 25 at. % of Ni, respectively. The possible correlation of the calculated concentrations with the glass-fo rming ability of the Ni-Mo system is also discussed.