Published in:
29-09-2022
Influence of Electroplastic Deformation on the Deformation Resistance of Refractory Metals
Authors:
O. N. Chicheneva, N. A. Chichenev, A. N. Pashkov, T. Yu. Gorovaya, M. V. Vasiliev
Published in:
Metallurgist
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Issue 5-6/2022
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Abstract
Based on the analysis of theoretical and experimental studies, this article proposes that rolling (or flattening) while passing a high-density electric current through a deformation center is an effective method for obtaining precision tapes and micron cross-section profiles from difficult-to-form metals and alloys. Reliable experimental data on the deformation resistance of difficult-to-form metals and alloys at various deformation temperatures, degrees, and rates are required to develop a mathematical model of the electroplastic deformation process and to solve practical problems associated with the pressure treatment of these metals and alloys. Regarding the electroplastic deformation process, it is proposed that a multiplier that considers the influence of electric current be added to the dependence of deformation resistance on the temperature, degree, and rate of deformation. An analysis of the experimental data obtained during the electroplastic flattening of wires from several nonferrous and refractory metals and alloys revealed that when the effect of electroplastic deformation was registered, the deformation resistance could be considered to decrease linearly in the first approximation as the density of the electric current passing through the deformation focus increased. A mathematical model of the resistance of metals and alloys to electroplastic deformation was developed based on the mathematical processing of the experimental data; in this model, the deformation resistance decreased linearly as the density of the electric current passing through the deformation focus increased.