Effect of deformation and microalloying on the structure and properties of high-temperature niobium-base alloys

Niobium-base alloys are characterized by high heat resistance and are used for parts functioning at temperatures exceeding 1200 degrees C. A disadvantage of alloys that include over 15% reinforcing elements (W and Mo) is their low ductility. In the cast state niobium alloys containing over 20% Mo have a specific elongation of about 1%. Repeated deformation followed by recrystallization annealing increases the ductility parameters of the alloys. A complex approach to structure formation that includes regulating the deformation process and using microalloying suggested in the present work makes it possible to solve the problem of increasing the ductility of high-temperature niobium-base alloys.