Superalloy VJ175 structural and phase stability assessment after heat treatment and exposure at working temperature

Bakradze M.M., Lomberg B.S., Filonova E.V., Chabina E.B.
UDC
669.018.44:629.245
DOI
10.18577/2307-6046-2017-0-7-5-5
Article PDF (Russian) (862.91 KB)
How to cite
Bakradze M.M., Lomberg B.S., Filonova E.V., Chabina E.B. Superalloy VJ175 structural and phase stability assessment after heat treatment and exposure at working temperature // Proceedings of VIAM. 2017. No. 7. DOI: 10.18577/2307-6046-2017-0-7-5-5. URL: https://test.viam.ru/en/journal/2017/7/5
Keywords
Ni-base superalloy, anneal, isothermal forging, heat treatment, mechanical properties.
Abstract

The changes of microstructure and phase composition of disks for gas turbine engines made of superalloy VJ175 after heat treatment and imitation of operating at working temperature (long-term exposure at maximal operating temperature 750°С) are investigated. Mechanical properties are defined, fractography investigations are carried out in initial (heat treated) condition and after long-term for 1000 and 2000 hours heating up to operating temperature.

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