Modeling Zirconium Alloys Recrystallization by Full-Field and Mean-Field Approaches

The present article details the results obtained with recrystallization models based upon mean-field or full-field assumptions, respectively. The two models propose to simulate continuous dynamic and metadynamic recrystallization by explicitly describing the progressive formation and evolution of substructure. These two models are applied to simulate zircaloy-4 recrystallization. To identify model parameters and evaluate the model abilities and limitations, the numerical results are compared to experimental ones obtained from EBSD characterization on samples that have been submitted to hot compression or hot extrusion.