Research Progress on Homogeneous Deformation of Metallic Glasses

Abstract:

Metallic glasses exhibit exceptional properties but suffer from brittle fracture via shear banding at room temperature. Homogeneous deformation is vital for understanding amorphous plasticity. This review summarized recent advances in homogeneous deformation of metallic glasses in atomic-scale flow mechanisms, evolution of shear transformation zones, flow defects, and hierarchical relaxation processes. The correlation among free volume kinetics, stress-temperature equivalence, and rejuvenation threshold stress was introduced. Role of structural heterogeneity in flow stability was discussed, alongside the application of modern characterization and modeling techniques. The review proposed investigation methods for designing high ductile metallic glasses based on these insights.