V-GA-BASED ALLOYS AS CANDIDATE MATERIALS FOR FUSION-REACTOR APPLICATION

Results of the experimental study of some physical, mechanical and tec hnological properties of the reduced activation vanadium-gallium-based alloys are presented. The activation calculations show that Ga has th e lowest cooling time not only in comparison with alloying elements Ti and Cr in low activation V-Ti-Cr alloys but also with vanadium. The e ffect of Ga(1-8 at%), Cr(5-6 at%) and Ce(0.05-0.1 at%) on workability, mechanical properties, thermal conductivity, elastic modulus (E,G), a nd Poisson's ratio of V-Ga was studied, The same properties of some ar e also studied. The level of tensile properties, thermal conductivity and elastic properties of V-Ga alloys are comparable with V-Ti-Cr allo ys, but their activation parameters and ductility are superior. The ex perimental results make it possible to recommend V-Ga-based alloys as reduced activation structure materials for fusion reactors.