Shear Modulus Relaxation and Thermal Effects in a Zr 65 Cu 15 Ni 10 Al 10 Metallic Glass after Inhomogeneous Plastic Deformation

The shear modulus and enthalpy relaxation in a deformed Zr65Cu15Ni10Al10 metallic glass has been investigated. It has been established that inhomogeneous plastic deformation leads to a decrease in the unrelaxed shear modulus and a change in its relaxation kinetics upon subsequent heat treatment. An analysis of the calorimetric data shows that inhomogeneous plastic deformation leads to the accumulation of an additional internal energy in the metallic glass, which, however, causes no shear modulus relaxation.