Per: BERNARDO POMPERMAYER EDUARDO (UNIVERSIDADE FEDERAL DO RIO DE JANEIRO), Fabiano Pinheiro Ribeiro (UNIVERSIDADE FEDERAL DO RIO DE JANEIRO), Rafaella martins ribeiro (UNIVERSIDADE FEDERAL DO RIO DE JANEIRO)
Abstract:
Zr-Nb alloys are used in the manufacture of structural components for nuclear reactors. During processing, the required properties for operation are developed. Therefore, the processing routes aim to promote a microstructure with partially or fully recrystallized grains, a uniform distribution of precipitates, and an adequate crystallographic texture to ensure good performance of these components. Thus, the study of new alloys and processing routes are important to optimize properties for nuclear application. This work aims to develop a processing route through computational simulation for a Zr-Nb-Mo alloy. In this way, computational simulation was used to understand the distribution of deformation and stress along the sheet during hot and cold rolling in order to develop a processing route. The results obtained from the simulation indicated that the proposed route is viable, ensuring the integrity of the sheets, as they did not show fractures and revealed a homogeneous distribution of deformations during hot and cold rolling. The experimental processing of the sheets showed, on average, a 93% agreement in terms of thickness with the simulations. At the end of processing, different heat treatments showed a trend of decreasing hardness values with increasing time, indicating that recrystallization can occur after annealing at 550°C for 4 hours.