Monte Carlo simulations to study the forming ability and atomic configuration of the Cu-Al amorphous alloys

► Monte Carlo simulations to study the formation of Cu-Al amorphous alloy. ► A favored composition range of 17-73 at.% Al for amorphous alloy formation. ► Cu50Al50 alloy has the maximum driving force to amorphize. ► Voronoi analyses reveal the atomic configuration of Cu50Al50 amorphous alloy.