The orientation relationships between compression twins and their matrices in Mg were investigated by using the electron back-scattering diffraction technique. Schmid factor analyses were applied to determine the orientation dependency of compression twins and the condition for double twinning. Results showed that thin compression twin bands of (10•¯1)-type easily lost their exact twin relation of 56°<11•0> to about 40°<11•0> due to the instability of twin orientation and immobility of twin boundaries. And the basal orientation with TD-rotation tends to induce tension twinning in compression twins.

Analyses on Compression Twins in Magnesium. L.Meng, P.Yang, Q.Xie, W.Mao: Materials Transactions, 2008, 49[4], 710-4