Room-temperature resistometric and microhardness measurements were performed on cold-worked pure V, and solution-annealed or cold-worked V-4Cr-4Ti alloy after isochronal annealing at 200 to 1200C. The results suggested that Ti solutes in V alloys interacted with interstitial O, C and N at 200C and above. This interaction lowered the effective diffusivities of interstitials in the alloys and shifted the interaction, of interstitials with dislocations, to higher temperatures as compared with those for cold-worked V. It was concluded that microstructural changes which were caused by precipitation, and reductions in dislocation density, during recrystallization might account for most of the differences which were observed in the properties of the materials.

Solute Interactions in Pure Vanadium and V-4Cr-4Ti Alloy. D.T.Hoelzer, M.K.West, S.J.Zinkle, A.F.Rowcliffe: Journal of Nuclear Materials, 2000, 283-287, 616-21