Production of Aircraft Engine Compressor Rotor Discs with Desired Service Life in Titanium Alloys


We consider the problem of optimizing technological regimes of forging aircraft engine compressor rotor discs in high-temperature titanium alloys under conditions of superplastic deformation and suggest a solution to it. We characterize the technological possibilities of producing forged disc billets with a desired structure that provides the formation of a required set of mechanical properties. A general scheme of the technological solution to the problem and of the provision of a required service life in high-temperature two- phase titanium alloys is provided. We present the results of structure studies, investigations of mechanical and service properties of compressor discs with different types of microstructure (globular, bimodal, and lamellar), that are produced in articles during severe plastic deformation under superplasticity conditions.