Glass Forming Ability of Zr–(Ni, Cu) Based Ternary Metallic Glasses Based on Bond Parameter Function and Formation Enthalpy Model

Abstract

Zr-based metallic glasses have been extensively studied owing to their high glass forming ability and superior mechanical properties. The glass forming ability of Zr–Ni–(Al, Ti, Nb) and Zr–Cu–(Al, Ti, Fe, Co, Ni) bulk metallic glasses was studied based on the bond parameter function and formation enthalpy model. Elliptical curves can be used to distinguish the glass forming regions from other regions in two-dimensional model diagrams. The elliptic parameters can be defined by the relative parameters of the constituent elements. The reproducibilities of this model for Zr–Ni- and Zr–Cu-based metallic glasses were 84.4% and 93.4%, respectively, indicating good agreement of this model with available experimental data. The predicted results provide a new strategy for designing excellent-performance metallic glasses.