Modeling dynamic recrystallization behavior of Al-Zn-Mg-Cu alloy during electroshock assisted tension based on cellular automata

Abstract Electroshock assisted forming of high-strength aluminum alloy is a new type plasticizing manufacturing method. To study the dynamic recrystallization (DRX) behavior Al-Zn-Mg-Cu during low-frequency electroshock tension, cellular automata (CA) model coupled electro-thermal-mechanical multi-field effect was proposed on Matlab platform. In established CA model, additional driving force generated by electric pulse nucleation and growth has been innovatively taken into account. The grain diameters obtained above are consistent with that electron back scatter diffraction (EBSD) tests, which verified accuracy model. effects current density electrical period morphology, average diameter, DRX fraction, size distribution were analyzed. Additionally, optimal parameters tensile (current 30 A·mm −2 , 5 s) predicted At this time, fraction increased to 45.79% fracture elongation unidirectional specimen 21.74%.