The correlation of quasistatic and dynamic relaxations was discussed in a typical strong Zr 55 Al 10 Ni 5 Cu30 metallic glass from room temperature to T g. The quasistatic relaxation behavior, investigated by high temperature compressive testing at a constant strain rate, was compared with dynamic tensile relaxation behavior. A correlation equation of the dynamic frequency and quasistatic strain rate was successfully deduced, and then its validity was experimentally confirmed in a fragile metallic glass. Using this correlation, the Cox-Merz rule, derived for correlating the steady-state and dynamic viscosities of the polymers, is found to be applicable to metallic glasses.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)