MICROSTRUCTURAL EXAMINATION OF SIMPLE VANADIUM ALLOYS IRRADIATED IN THE FFTF/MOTA

A series of V alloys including pure and impure V and alloys with Mo, W, Cr, Ti and Y have been examined by transmission electron microscopy following irradiation in the FFTF/MOTA to 14 dpa at 870 K. All specimens were found to have developed features typical of radiation damage. Void, dislocation and precipitate structures were different even for specimens of similar composition. However, in general, specimens displayed precipitate development, often indicated by {001} stacking faults. About half of the alloys showed voids. Dislocation structures included large loops and dislocation tangles but much smaller loops similar to black spot damage could be frequently identified.