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Vanadium alloys exhibit important advantages as a candidate structural material for fusion first-waWblanket 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 V-Ti, V-Cr-Ti and V-Ti-Si alloys before and after irradiation.

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Vanadium alloys have been identified as a leading candidate material for fusion first-wall/blanket applications. Certain vanadium alloys exhibit favorable safety and environmental characteristics, good fabricability, high temperature and heat load capability, good compatibility with liquid metals and resistance to irradiation damage effects. The current focus is on vanadium alloys with (3-5)% Cr and (3-5)% Ti with a V-4Cr-4Ti alloy as the leading candidate.iThe available data base indicates that the V-Cr-Ti alloys provide the following advantages:• These alloys are readily formable and weldable; however, atmospheric contamination must be avoided during welding and high temperature processing.• The relatively high thermal conductivity and low thermal expansion provide for a high heat load capability.• These alloys exhibit _'ioodhigh temperature tensile and creep properties which permit high temperature operation.

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