Investigation of electroplastic effect at high deformation rates for 304SS and Ti–6Al–4V

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

“…Magargee et al (2013) investigated the influence of continuous current on the flow stress of commercially pure titanium (CP titanium, Grade 2) sheet and pointed out that no pure EPE was observed and attributed the reduction of flow stress to the thermal softening. 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.…”

Feasibility of electrically assisted progressive forging of aluminum 6061-T6 alloy

“…For example, for the selected copper alloys, the threshold energy required to considerably reduce flow stress decreased as the content of zinc in the copper alloy increased. However, for some cases, the effect of electric current on the mechanical behavior of metal alloys was observed to be insignificant [4,7]. For example, the effect of a continuous electric current on the compressive formability of a Cu360 alloy was shown to be insignificant [4].…”

“…For example, the effect of a continuous electric current on the compressive formability of a Cu360 alloy was shown to be insignificant [4]. Also, the electroplasticity was not observed during tension Kolsky bar experiments of 304 stainless steel and Ti-6Al-4V at high deformation rates and continuous electric current [7].…”

Investigation of thermal and mechanical effects during electrically-assisted microbending

“…In addition, microstructural analyses found local grain boundary melting and cavitation which could be factors in observed electroplastic effects (Rong et al, 2013). Finally, Kinsey et al (2013) conducted EAF experiments on a Kolsky bar to assess if an electroplastic effect exists at high strain rates (10 3 s −1 ). The results were found to be temperature, not electrical current, dependent.…”