Texture dependencies on flow stress behavior of magnesium alloy under dynamic compressive loading

In the current study, texture of magnesium alloy was redistributed through high-temperature compression and its effect on flow behavior under dynamic compressive loading was investigated. The result demonstrated that the fiber basal texture was redistributed c-axes towards 35° transverse direction under high-temperature compression. Consequently, the stress-strain curve was changed from typical concave down to sigmoidal shape under loading along the normal direction. The sigmoidal shape curve is mainly attributed to the changes in the texture and the signature of twinning induces deformation. The optical microscopy and electron backscattered diffraction analysis verified that the minor fraction of {101‾2}<101‾1> extension twinning was evidenced in ZK30-1 Mg alloy, while pronounce {101‾2}<101‾1> extension twinning and {101‾1}<101‾2> contraction twinning were witnessed in ZK30-2 Mg alloy which was validated through transmission electron microscopy. The changes of texture improve the ultimate compressive strength (~33 MPa) under loading along with normal direction and can provide benefit for further development of magnesium alloys.