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We study the thermally activated, slow conversion of the hysteretically retained ω phase into stable α phase in recovered samples of shocked zirconium. The ω-phase decays in time following an algebraic law, unlike the predictions of the nucleation-growth framework for first order transitions, and residual volume fractions of phases and dislocation densities are related by a power law. We propose an...
An open question in the kinetics of martensitic transformation is the microscopic mechanism responsible for the evolution of a new phase. We have analyzed data from shocked recovered samples that monitor the volume fraction of the ω phase in α-Zr as a function of time under isothermal conditions in the temperature range 430–545K. Our results show that the effective activation energy strongly depends...
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