Electric current-induced annealing during uniaxial tension of aluminum alloy

Inclusion agglomeration in electrified molten metal: Thermodynamic consideration

“…They are based on the electron-phonon interaction, 15,16 electron-dislocation interaction, 17,18 collective motion approximation, 19,20 thermodynamic consideration, 21,22 respectively and so on. Experimental investigation has provided very rich evidences on using electric current to affect microstructure, 23,24 crystallographic taxture, 25,26 workability, 27,28 and processing environments. 29,30 In the present work, thermodynamic consideration is implemented to investigate the inclusion agglomeration behaviour under electric current.…”

Decoupling Thermal and Electrical Effect in an Electrically Assisted Uniaxial Tensile Test Using Finite Element Analysis

“…[8,9] Detailed experimental investigations on the effect of material, pre-strain, polarity, and other mechanical behavior like fatigue and creep on electroplasticity have been studied on different metals in the past; details of which are summarized in the excellent reviews. [9,10] The interest in electroplasticity has gained much interest of late [11][12][13][14][15][16] in the potential application of enhancing formability [7] and reducing spring-back [17] in sheet metal components. The application is especially useful in materials such as magnesium, [18] titanium, [19] and certain aluminum alloys, [15] which exhibit poor formability at room temperature.…”

“…The warm forming which is generally required for such alloys can be replaced by electrically assisted forming. Recent studies [15,16] utilize the advancements in experimental techniques to capture the mechanical behavior and temperature distribution accurately.…”

“…Microstructural changes similar to annealing were observed when DC current was passed during the deformation of aluminum alloys. [8,16] One possible reason could be due to the non-homogenous temperature distribution in the lattice near dislocations. [12] The other possible explanation could be due to the localized heating at the grain boundaries under electric current; Fan et al [14] observed grain boundary melting and intergranular cavitation in brass alloys under electric current when the average temperature is much lower than that of melting.…”

Effect of Electric Current Pulse on Mechanical Properties of Ultra-High Strength Steel 1180cp

“…This phenomenon has been referred to the electroplasticity. While a completely satisfactory explanation for the mechanism of electroplasticity has not been provided yet, a recent study by Kim et al [9] has shown that the electroplastic behavior may not be simply understood as a result of resistance heating and suggested the occurrence of electrically induced annealing by a pulsed electric current during deformation.…”