Stored energy in a cold-rolled metallic glass

The relaxation spectra of a cold-rolled Pd-Cu-Si glass are very similar to that of the initially quenched glass, except for the low-temperature peak at 400 °K. About 4% of expended energy is stored in the glass. A possible mechanism is that the stored energy arises from local heating and quenching in shear bands. The bandwidth and the stored energy in the shear bands are of the order of 2500 Å and 2.5×104 erg/cm2, respectively.