Hot-rolling experiments with a reduction from 10 to 60% in single pass were conducted on AZ31B twin-roll cast sheets. Optical microscope, electron back-scattering diffraction tests and transmission electron microscopy were used to investigate twinning and DRV/DRX behaviors at different stage in the hot-rolling process. Two types of twinning occurred in the initial stage of hot-rolling process. DRV and discontinuous recrystallization dominated at moderate strain while continuous DRX took place homogeneously throughout original grains at the largest strains.

Twinning, Dynamic Recovery and Recrystallization in the Hot Rolling Process of Twin-Roll Cast AZ31B Alloy. Z.Zhang, M.Wang, Z.Li, N.Jiang, S.Hao, J.Gong, H.Hu: Journal of Alloys and Compounds, 2011, 509[18], 5571-80