Post-forming, electro-plastic effect internal stress reduction in AA5754 aluminium alloy

Aluminium alloys are one of the most efficient materials for weight reduction in car industry. However, favourable performance conflicts with difficulties transforming these through plastic deformation processes such as stamping. Among different issues, they characterised by a high springback effect. Numerous authors have explored use electro-plastic effect (EPE) to mitigate internal stresses and resultant springback. up-scaling existing laboratory solutions an industrial framework is critical challenge. Therefore, this work, post-forming (PFEPE) AA5754 material. Stress-relaxation + PFEPE experiments were conducted using electric pulse charge passing though sample, and, apart from impact on residual stresses, potential occurrence recrystallisation was evaluated. The results indicate that range pulses exists (>2000 A·ms/mm 2 <4500 A ms/mm ) which 10–30% can be achieved without critically impacting material's mechanical performance.