Improvement of the chemical composition and structure of castable nickel-base superalloy with low density

Part 1
Petrushin N.V., Visik E.M., Elyutin E.S.
UDC
669.017.165:669.018.44
DOI
10.18577/2307-6046-2021-0-3-3-15
Article PDF (Russian) (1.03 MB)
How to cite
Petrushin N.V., Visik E.M., Elyutin E.S. Improvement of the chemical composition and structure of castable nickel-base superalloy with low density. Part 1 // Proceedings of VIAM. 2021. No. 3. DOI: 10.18577/2307-6046-2021-0-3-3-15. URL: https://test.viam.ru/en/journal/2021/3/1
Keywords
castable nickel-base superalloys, mathematical planning of the experiment, durability, long-term strength, density, phase transformations.
Abstract

The tendencies of advancement of nickel-based superalloys for casting blades of aircraft engines are considered. The durability of polycrystalline heat-resistant Nickel alloys of the VZhL12U type with variable content of alloying elements W, Mo, Cr, Co, Ti, Nb, Hf, and C at temperature 975 °C and stress 200 MPa was studied using the method of mathematical planning of the experiment. Based on the results of the research, concentration regression models of durability were constructed and the effect of Hf on the temperatures γ'-solvus, melting γ+γ' eutectic, solidus and liquidus of VZhL12U-type alloys was established.

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