On correlation of composition, structural-phase state, and properties of E635 zirconium alloy

The results of research on the correlation of the alloying elemental content, structural-phase state, and properties prior to and after irradiation of the E635 zirconium alloy of the Zr-Nb-Sn-Fe system are generalized. The possibilities of controlling the viscosity, technological plasticity, and corrosion resistance through optimizing the content of the alloying elements and structural-phase state by virtue of development of deformation and thermal processing modes are shown. High resistance to radiation-induced deformation of the alloy results from the primary composition and the evolution of its structural-phase state under irradiation, in which iron plays a key role.