The interaction between the long-period stacking order phase and the (10▪2) deformation twin in the rapidly solidified alloy was investigated. A densely developed long-period stacking order phase prevented the growth of the (10▪2) deformation twin in the Mg matrix. Long-period stacking order phase with a low density could not resist twinning. The trace of the basal plane, in such long-period stacking order phase, deviated by a constant angle of about 3.8° at the twin boundary. This angle was explained by atomic movement, with shuffling, in the formation of the (10▪2) twin.

Interaction between Long-Period Stacking Order Phase and Deformation Twin in Rapidly Solidified Mg97ZnY2 Alloy. M.Matsuda, S.Ii, Y.Kawamura, Y.Ikuhara, M.Nishida: Materials Science and Engineering A, 2004, 386[1-2], 447-52