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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.
Keywords: deformation processing; superplasticity; required/desired properties; severe plastic deformation |
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