Effect of electric pulse rolling on plastic forming ability of AZ91D magnesium alloy

AZ91D magnesium alloy rolled under four rolling conditions, namely cold rolling, electric pulse hot and the first principles calculation of Mg with or without external field carried out. The results show that: application current in process can effectively improve edge crack sample, optimize texture reduce its strength, promote generation tensile twins transition from small Angle grain boundaries to large boundaries, thus plastic forming ability alloy. Make it more prone deformation. Compared ordinary microhardness α-Mg matrix decreases by 15%. strength elongation increased 137MPa 3.4% 169MPa 4.7%, respectively. that stiffness Poisson's ratio increases when applies. When B/G value is greater than 1.75, plasticity improved. fault energy at base surface does not change much, while prismatic obviously, showing mainly affects slip Mg, which makes easier start, improves Mg.