Production of single-crystal castings with a given axial and azimuthal orientations

Toloraya V.N., Ostroukhova G.A.
UDC
621.763
DOI
10.18577/2307-6046-2022-0-8-3-13
Article PDF (Russian) (946.05 KB)
How to cite
Toloraya V.N., Ostroukhova G.A. Production of single-crystal castings with a given axial and azimuthal orientations // Proceedings of VIAM. 2022. No. 8. DOI: 10.18577/2307-6046-2022-0-8-3-13. URL: https://test.viam.ru/en/journal/2022/8/1
Keywords
seed, turbine blade, single-crystal structure, crystallographic orientation (CGO), axial CGO, azimuthal CGO, metallographic and diffractometric method
Abstract

Deals with the issues of determining and evaluating the crystallographic orientation (CGO) of single-crystal castings from nickel heat-resistant alloys obtained by the method of directed crystallization. The methods of setting the axial and azimuthal CGO in castings using seed crystals (seedings) from alloys of the Ni–W system are described. Presents methods for obtaining castings of turbine blades with a single-crystal structure of a given spatial orientation , which allows significantly reducing the level of thermal stresses for cooled blades.

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