Effect of Induced Current on the Flow Stress in the Electromagnetic Ring Expansion

The electromagnetic forming (EMF) is a promising metal-forming process for the complex geometric shape and lightweight construction. Material behavior in EMF is one of the important researches. Herein, an experiment system of the electromagnetic ring expansion is employed to study the flow stress in the EMF with the consideration of the induced current, high strain rate, and temperature rise. Compared with the simulation results, the experiment results are analyzed to investigate the effect of induced current on the flow stress of the aluminum alloy during the EMF.