EVALUATION OF LOW-ACTIVATION VANADIUM ALLOYS FOR USE AS STRUCTURAL MATERIAL IN FUSION-REACTORS

The V-7.2Cr-14.5Ti, V-9.2Cr-4.9Ti, V-9.9Cr-9.2Ti, V-13.5Cr-5.2 Ti, V-4.1Cr-4.3Ti, Vanstar-7, V-4.6Ti, V-17.7Ti, V-10.0Ti, V-3.1Ti-(0.5-1.0)Si, and V-2.5Ti-1.0Si alloys were evaluated for use as structural material in fusion reactors. The alloys were evaluated on the basis of their unirradiated and neutron-irradiated yield strength; swelling resistance; ductile-brittle transition temperature; resistance to hydrogen, helium, and irradiation embrittlement; and compatibility with a lithium reactor coolant. On the basis of these evaluations, alloys of V-(0-7)Cr-(5-10)Ti-(0-1)Si are recommended for more intensive evaluation for use as structural material in fusion reactors.