Synthetic relationship between titanium and alloying elements in designing Ni-free Ti-based bulk metallic glass alloys

Ni-free Ti-based bulk metallic glass (BMG) alloys were reported to have a high enough glass forming ability (GFA). In this study, the glass forming ability of Ti-based BMG alloys without Ni and Be additions is analyzed using Inoue’s empirical rules, bonding order (Bo), and molecular d-orbital energy values (Md). The developed Ti-based BMG alloys revealed a separable location on the Bo¯-Md¯ diagram which presents the direction for design of Ti-based BMG alloys with high GFA.