<p>Microstructure control during radial-axial ring rolling (RARR) of Waspaloy is necessary to improve its performance. This being a complex rolling process may give rise to nonuniform local strain and temperature distribution within the rolled product, resulting in complex microstructure evolution. This study considers the ring rolling process as a multi-pass high-temperature deformation that combines the characteristics of dynamic and meta-dynamic recrystallization occurring alternately within the grains of the ring. Therefore, a new microstructure evolution model has been proposed. The results predicted was verified by conducting RARR experiments, the predicted microstructure at different positions of the ring section was in good agreement with those obtained experimentally. Predictions of the proposed model was found to be better than traditional models. The evolution of strain, temperature, fraction recrystallized, and average grain size during the process of profiled ring rolling was analyzed. It was found that the occurrence of bimodal grain distribution on the inner surface of the profiled ring was because of lower strain and temperature, inhibiting the process of recrystallization.</p>