Mechanical Engineering Institute named after A. A. Blagonravov of the Russian Academy of Science, Moscow, Russia
V. I. Stashenko, Leading Researcher, Candidate of Physical and Mathematical Sciences, e-mail: vis20-11@rambler.ru
О. B. Skvortsov, Senior Researcher, Candidate of Technical Sciences, e-mail: oleg.b.skvorcov@gmail.com

Taking into account the electroplastic effect (EPE), the presence of fastflowing shock-wave processes in metallic materials that occur in the surface layer of the sample at the edges of an electric pulse (EP) has been experimentally established. The electrodynamic effect of EP includes a short oscillatory shock pulse lasting about 10 microseconds and decaying oscillations that last no more than 300 microseconds. These oscillations coincide in time with the usual deformation jumps and significantly affect the plastic deformation process. The action of EP is accompanied by bending nature of transverse deformations in the samples and significant vibratory displacement of the sample layers both in the transverse and axial directions. It is important to take these into account when assessing the vibration level in the structural elements of power electrical units. The established patterns are independent and are not caused by skin, pinch, ponderomotive, or thermal effects in the metal. Studies of shock wave processes conducted on non-ferrous metal samples have allowed expanding the understanding of EPE. The results obtained will contribute to the creation of a consistent description of electroplasticity and structural transformations in metals when using EPE and developing new technologies based on it. Sensors measuring fast-flowing processes can be used to control plastic deformation during metal pressure treatment using EPE. They record changes in the material based on the vibration response, which allows tracking the deformation process in real time.

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