The evolution of coarse grains and its effects on weakened basal texture during annealing of a cold-rolled magnesium AZ31B alloy

The nucleation, grain growth of 34 coarse grains during annealing were tracked using a quasi-in-situ EBSD method. These had different orientations and most non-basal orientated. No preferable or special types boundaries identified. Only 9 nucleated from deformed due to initial large size limited boundary volume fraction. main nucleation site was dislocation cells subgrains in interiors. Their recrystallisation behaviour can be illustrated by abnormal subgrain (AsGG) rarely reported Mg alloys. basal showed no advantage terms number over other grains, leading weak texture AZ31B alloy.