Abstract
Vanadium alloys exhibit important advantages as a candidate structural material for fusion first-wall/blanket applications. These advantages include high temperature and high wall load capability, favorable safety and environmental features, resistance to irradiation damage, and alloys of interest are readily fabricable. A substantial data base has been developed on laboratory-scale heats of VTi, VCrTiSi alloys before and after irradiation. Investigations in recent years have focused primarily on compositions of V(0–15)Cr(0–20)Ti(0–1)Si. Results from these investigations have provided a basis for identifying a V4Cr4Ti alloy as the US reference vanadium alloy for further development. Major results obtained on one production-scale heat and three laboratory heats with compositions of V(4–5)Cr(4–5)Ti are presented in this paper.
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