Abstract
A technique has been developed for carburizing niobium- and tantalum-base alloys by exposure to a gaseous benzene-hydrogen mixture. The quantity and distribution of carbon absorbed by the specimen can be controlled by varying the composition of the gas mixture and the temperature of the part to be carburized. Several specimens of Nb-1%Zr and T-III alloys were carburized and tested in creep rupture to demonstrate the strengthening effect of the carbon.
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