Abstract
We deduce the parameters of the non-linear relaxation distribution model (DNLR) from isothermal measurements. Following this thermodynamic theory, we present a theoretical application of stress relaxation experiments by bend tests of (Fe 50Ni 50) 1− x B x quenched metallic glasses. From radius of curvature measurements we deduce the three characteristic parameters of the DNLR model: the activation enthalpy ΔH +, the activation entropy ΔS + and the non-linear parameter K nle . We can thus determine the effect of the boron concentration on the aging of these alloys.
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