Influence of Small Amounts of Be on Precipitation Behavior in a Cu-1.0 mass%Fe Alloy

Abstract

The effects of Be addition up to 0.1 mass% on the formation and growth of γ-Fe precipitates were examined for a Cu-1.0 mass%Fe alloy. The formation rate of precipitates increased with increasing solution temperature and Be content. The transition from growth to Ostwald ripening occurred more easily as the Be content increases. The rate of coarsening of precipitates decreased with increasing Be content because both the equilibrium solubility of Fe in the Cu matrix and the volume diffusion coefficient of Fe in Cu were reduced.