Structure formation during hot plastic deformation of a nickel high-temperature alloy with zero γ/γ′-misfit

Karashaev M.M., Petrushin N.V., Zaysev D.V., Svetlov I.L.
UDC
669.245
DOI
10.18577/2307-6046-2026-0-6-3-18
Article PDF (Russian) (1.99 MB)
How to cite
Karashaev M.M., Petrushin N.V., Zaysev D.V., Svetlov I.L. Structure formation during hot plastic deformation of a nickel high-temperature alloy with zero γ/γ′-misfit // Proceedings of VIAM. 2026. No. 6. DOI: 10.18577/2307-6046-2026-0-6-3-18. URL: https://test.viam.ru/en/journal/2026/6/1
Keywords
deformable nickel-based superalloys, hot deformation, grain structure, recrystallization, deformation defects, microsegregation of alloying elements, creep mechanisms
Abstract

In this work, using the method of transmission electron microscopy, the mechanisms of grain structure formation during hot deformation and microstructure formation during subsequent full heat treatment in the two-phase (γ + γ′)-region of an experimental nickel-based superalloy with zero γ/γ'-misfit for gas turbine engine disks have been identified. The chemical composition of this alloy was developed based on a granular nickel-based superalloy VZh178P using the method of computer design. Creep mechanisms at temperatures of 750 and 850 °C for an experimental deformed alloy in a heat-treated state were analyzed.

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