The absence of an electroplastic effect in lead at 4.2K

Finite deformations of metal cylinders subjected to electromagnetic fields and mechanical forces

“…This limitation, however, will not cause a significant difference in the predicted results because the application of only current density for this problem will not cause the specimen to yield. Experiments by Patsey (1996) and Goldman et al (1981) do not support using an electroplastic effect to explain metal deformation subjected to mechanical and EM loading. Their explanations of a load drop agree with the present research.…”

“…It was hypothesized that part of the stress changes were due to an interaction between the electric current and dislocations. There has been considerable debate regarding the existence of such an ''electroplastic'' effect (Patsey, 1996;Goldman et al, 1981;Leibfried, 1950;Lothe, 1960;Galligan and Pang, 1979). The objective of this work is to determine whether an ''electroplastic'' effect is necessary to explain certain specific observations.…”

Investigation of influence of direct-current pulses on springback during V-bending of AZ31B magnesium alloy sheet

“…Kinsey et al (2013) studied the EPE at high deformation rates for 304SS and Ti-6Al-4V subjected Kolsky bar tension deformation and the results showed that the pure EPE did not exist either. Goldman et al (1981) indicated that at temperatures above 20K, the interaction of electrons and dislocations was negligible and any stress reductions above this temperature must be caused by heating. Thus, whether pure EPE exists or not still remains unclear.…”

Macroscopic Characterization of Mechanical Properties in Electric Current Treated Dry Drawn High Strength Wires

“…The concept was traditionally explained to occur by an increased mobility of dislocations caused by the applied current exerting a composite force on them. This was later disproved and replaced in favor of a more conservative theory attributing the apparent increase in plasticity to a softening of the material caused by transient heating which lead to significant deformations under smaller than expected loads [8]. The transient influence of electric currents on metal deformation has been studied extensively [9][10][11], however no adequate consideration has been given to the permanent changes in properties caused by this in-situ treatment.…”