On Spinodal-Like Phase Decomposition in U-50 Zr Alloy

Abstract

Finley dispersed two phase microstructures resulting from a spinodal decomposition are of interest as they are associated with enhanced mechanical properties and excessive interfaces to mitigate defect related behavior. This study reports a spinodal-like phase decomposition in a U-50Zr alloy by thermal annealing at 620°C and ion irradiation at 550°C, with the latter temperature too low to initiate phase transformation pure thermally. The results hold broad impact for U-Zr alloy systems and its application as advanced nuclear fuel.