Deformation Mechanism of 5052 Aluminum Alloy Using Electrically Assisted Electromagnetic Forming

A technology named as electrically assisted electromagnetic forming (EAEMF) was used to improve the plastic deformation ability of 5052 aluminum alloy at room temperature. The ANSYS software is used to study the force and deformation of workpiece based on sequential coupling method. The simulation results show that the pulse current can increase the current density, improve the uniformity of current distribution, and increase the forming height of the sample. The primary strain and secondary strain are increased by 53.8% and 27.4% respectively. Under the same deformation condition, the elongation of EAEMF sample increases by 160%, while the strength decreases slightly. From the perspective of microstructure evolution, the dislocation density of EAEMF sample is lower than that of EMF sample, and the pinning effect of the second phase particles on the dislocation is weakened. Under the action of the pulse current, the dislocations continue to move around the second phase particles with higher energy, and the dislocations appear directional arrangement. Graphical abstract