The influence of Al content and annealing on vibration fracture properties of wrought Mg–Al–Zn alloys

This study investigated the vibration fracture behavior of two Mg–Zn–Al alloys, AZ31 and AZ61 in as-extruded and as-annealed states. The effects of deformation twins, precipitates and Al concentration on vibration properties were examined. As-extruded AZ31 specimens showed a longer vibration life than the others, mainly because of better damping capacity and a lack of intergranular Mg17Al12 precipitates.