Model for Forecasting Temperature Dependence of γ/γ' Misfit in Heat-Resistant Nickel Alloys

An analytical model for forecasting the temperature dependence of γ/γ' misfit in heat-resistant nickel alloys is proposed. The model accounts for the concentration dependences of the periods of crystalline lattices of the γ and γ' phases (Vegard law), thermal expansion of the γ and γ'...

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Bibliographic Details
Published in:Inorganic materials : applied research 2022-02, Vol.13 (1), p.7-16
Main Authors: Epishin, A. I., Petrushin, N. V., Svetlov, I. L., Noltse, G.
Format: Article
Language:English
Subjects:
Adequacy
Chemistry
Chemistry and Materials Science
Crystal lattices
Gamma-prime phase (crystals)
Heat resistant alloys
High temperature
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Mathematical models
Neutron diffraction
Nickel alloys
Nickel base alloys
Temperature dependence
Thermal expansion
Weather forecasting
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Summary:An analytical model for forecasting the temperature dependence of γ/γ' misfit in heat-resistant nickel alloys is proposed. The model accounts for the concentration dependences of the periods of crystalline lattices of the γ and γ' phases (Vegard law), thermal expansion of the γ and γ' lattices, and dissolution of the γ' phase at high temperatures. Adequacy of calculations of misfit is confirmed by comparison with the results of measurements using methods of X-ray and neutron diffraction. The model is applied for development of a nickel alloy with positive misfit.
ISSN:2075-1133
2075-115X
DOI:10.1134/S2075113322010105