Interaction between dislocations and {10-12} twin boundaries in deformation of magnesium

Twinning and dislocation slip are the main deformation mechanisms during plastic deformation of lightweight magnesium, thus, twin-slip interaction can be expected. However, the interaction processes have not been fully understood. In this work, we present experimental studies of twin-slip interaction in a wrought Mg alloy with a strong basal texture. The results show that twin-slip interaction has little effect on strain hardening. To understand the mechanism of twin-slip interaction, we perform atomistic simulations to investigate interaction between basal, prismatic and pyramidal dislocation and a twin boundary. The simulation results can be well correlated to the experimental studies.