| Abstract: | For the purpose of clarification of the mechanisms of the electron-plastic effect the influence of current pulses with a length of 2·10–4 sec and a density of more than 20 MA/m2 on the mobility of pyramidal dislocations in Zn single crystals in the area of thermally activated movement at 77 and 293 K and also on their multiplication was studied by the method of selective etching. It was shown that the increase in the rate of movement of dislocations under the action of current pulses is accompanied by multiplication of the dislocations with current densities of more, than 102 MA/m2. The rules established are discussed taking into consideration the pondermotive forces, thermal effects, electron-dislocation interaction, and the work of the Frank-Reid effect under the action of the electron wind.S. Ordzhonikidze Siberian Metallurgical Institute, Novokuznetsk. Translated from Problemy Prochnosti, No. 10, pp. 48–53, October, 1989. |
