Structural characterization of {101¯1} twin in a Zr alloy after β quenching

Abstract The { 1 0 1 ¯ 1 } twin in β-quenched Zr-1.0Sn-1.0Nb-0.3Fe (wt%) alloy was characterized by transmission Kikuchi diffraction (TKD) and high-resolution transmission electron microscopy (HRTEM). Basal-prismatic (BPy) and prismatic-basal (PyB) interfaces were observed at { 1 0 1 ¯ 1 } twinning boundary disconnections in zirconium for the first time. The migration mechanism of twinning boundaries (TBs) attributed to the glide of twinning disconnections was proposed.