Dynamic mechanical relaxation and thermal creep of high-entropy La30Ce30Ni10Al20Co10 bulk metallic glass

Dynamic mechanical relaxation is a fundamental tool to understand the and physical properties of viscoelastic materials like glasses. Mechanical spectroscopy shows that high-entropy bulk metallic glass (La30Ce30Ni10Al20Co10) exhibits distinct β-relaxation feature. In present research, dynamic analysis thermal creep were performed using this material at temperature domain around β relaxation. The components total strain, including ideal elastic anelastic viscous-plastic analyzed based on model shear transformation zones (STZs). stochastic activation STZ contributes strain. When or external stress high enough timescale long enough, interaction between STZs induces all spectrum activated, quasi-steady-state achieved.