Modeling the Thermal Stability of the $\alpha /\omega$ Microstructure in Shocked Zr: Coupling between defect state and phase transformation

Stephen R. Niezgoda, Thaddeus Song En Low

Under high pressure, Zr undergoes a transformation from its ambient equilibrium hexagonal close packed $\alpha$ phase to a simple hexagonal $\omega$ phase. Subsequent unloading to ambient co…