Relationship between the shear moduli and defect-induced structural relaxation ofhigh-entropy metallic glasses

Abstract: We performed high-frequency shear modulus and calorimetry measurements on seven high-entropy metallic glasses (HEMGs) in the initial, relaxed and crystalline states. It is shown that the shear modulus of HEMGs is intrinsically related with the concentration of defects responsible for structural relaxation. In the absence of structural relaxation, temperature coefficient of shear modulus of glass equals to that of the maternal crystal. All found regularities are governed by a single equation.