Effect of neutron irradiation on tensile properties of V-Cr-Ti alloys

The tensile properties of V-4Cr-4Ti, V-9Cr-5Ti, V-14Cr-5Ti, V-3Ti-1Si, V-5Ti, and V-18Ti alloys were determined at 25, 420, 520, and 600 C after neutron irradiation to 28-46 dpa at 420, 520, and 600 C. The yield strength of the unirradiated alloys increased significantly ( similar 50%) upon neutron irradiation. Irradiation hardening of the alloys at 25 C after irradiation at 420 C was in the order of V-18Ti<V-3Ti-1Si<V-5Ti<V-4Cr-4Ti<V-9Cr-5Ti<V-14 Cr-5Ti. Total elongation of the irradiated alloys at 25 C after irradiation at 420 C ranged from 3 to 11%, with total elongation of the alloys in the order of V-14Cr-5Ti<V-9Cr-5Ti<V-3Ti-1Si<V-5Ti<V-4Cr-4Ti< V-18Ti. The total elongation of the alloys at 600 C after irradiation ranged from 11 to 23%, with total elongation of the alloys in the order of V-14Cr-5Ti<V-9Cr-5Ti<V-4Cr-4Ti<V-5Ti<V-3Ti-1Si< V-18Ti. ((orig.))