Abstract:
From the first and second laws of thermodynamics it is shown that the dynamics of the nonequilibrium structural transition of the first order from the low-temperature elastic (glass state) to the high-temperature inelastic state (supercooled liquid state) during the passage of an electric current pulse is described by the generalized Landau–Khalatnikov equation for the short-range order parameter. This equation describes the transformation, on the one hand, stimulated by the energy effect of the current pulse, and on the other hand, occurring in the field of mechanical stress. The proposed transition model was used to formulate the physical picture, cause, condition, mechanism of electroplastic deformation in amorphous metal alloys under mechanical load, when passing an electric current pulse, to analyze the experimental results, and to obtain estimates of the characteristic values of the effect.
Keywords:amorphous metal alloys, electroplastic deformation, mathematical model, electric current pulse, nonequilibrium structural transition.
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