Correlation of dynamic and quasistatic relaxations: The Cox–Merz rule for metallic glass

Kato, Hidemi; Ichitsubo, Tetsu; Igarashi, Hitoshi; Inoue, Akihisa
December 2009
Applied Physics Letters;12/7/2009, Vol. 95 Issue 23, p231911
Academic Journal
The correlation of quasistatic and dynamic relaxations was discussed in a typical strong Zr55Al10Ni5Cu30 metallic glass from room temperature to Tg. 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.


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