Plastic deformation in electrical conductors subjected to short-duration current pulses

Effect of pulsed current on the deformation behavior of AZ31B magnesium alloy

“…As can be seen from above references review, although many experts have investigated the electroplasticity effect and even have developed some processing utilizing this phenomenon, there is none scientific consensus on electroplasticity effect; furthermore, there are still some materials scientists do not believe the existence of electroplasticity effect [28][29][30]. Overall, the explanation of electroplasticity effect is still uncertain, and it is highly necessary to devote enough time to investigate the electroplasticity effect during deformation.…”

Numerical and Experimental Investigation of the Impact of the Electromagnetic Properties of the Die Materials in Electromagnetic Forming of Thin Sheet Metal

“…In contrast to this are the effects from the change of the plastic material behavior, which can be traced back to the die material. First, the current density in the workpiece is changed, which results in an influence on the plastic material properties by exceeding the limiting current density described in the literature (EPE) [21]. At the same time in dependence of the die material, current flow and forming lead to heating, which affect the material properties during forming.…”

“…In this context, an increase in plasticity was shown for both long-term [19] and short-term [20] current duration time. This influence is attributed to the movement of free electrons, which lead to an increased (local) temperature of the workpiece due to the Joule heating caused by the electron movement [21]. But the comparison of electrically assisted forming with forming at different workpiece temperatures still shows differences regarding the plastic material behavior and grain microstructure [22,23].…”

Healing of Fatigue Crack in 1045 Steel by Using Eddy Current Treatment

“…Tao Yu, De Wei, Gang Wang and Hongchao Zhang [ 15 ] also studied the influence of electropulsing treatment on the crack healing in SUS304 stainless steel, and they found that the width of crack decreased gradually from the center to both sides of the crack after seven times electropulsing discharge treatments. The mechanical properties of aluminum alloy and copper alloy subjected to short duration current pulses were studied by F. Gallo et al; their results indicate that the yield stress dropped while the elongation and plastic strain increased after the current pulse experiment [ 16 , 17 ].…”