نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Electrically assisted forming has been introduced as a novel approach to improve the plastic response of lightweight alloys while avoiding the drawbacks of conventional thermal treatments. In this study, the electroplastic effect on the ductile fracture behavior of annealed AA6061 aluminum alloy was experimentally investigated. Tear‑drop notch specimens were subjected to hydraulic bulge testing, where the asymmetric notch geometry generated complex stress states, enabling a more realistic evaluation of fracture under conditions close to industrial applications. To determine fracture parameters, circular grid patterns chemically etched on the specimen surfaces were analyzed after deformation. The results showed that pulsed current increased the equivalent plastic strain at fracture by 3.8%, reduced fracture pressure by 6.85%, and raised dome height by 5.76%. In addition, the average dome thickness decreased by 7.07%, confirming enhanced formability. These findings demonstrate that the electroplastic effect can extend fracture strain even under non‑uniform stress states, highlighting its potential for advanced forming strategies in aluminum alloys.
کلیدواژهها English
