The influence of temperature and stresses on nature of nanosize γʹ-phase in Ni-base superalloy VZh175-ID

Lomberg B.S., Shestakova A.A., Letnikov M.N., Bakradze M.M.
UDC
669.018.44:669.245
DOI
10.18577/2307-6046-2019-0-12-3-10
Article PDF (Russian) (895.86 KB)
How to cite
Lomberg B.S., Shestakova A.A., Letnikov M.N., Bakradze M.M. The influence of temperature and stresses on nature of nanosize γʹ-phase in Ni-base superalloy VZh175-ID // Proceedings of VIAM. 2019. No. 12. DOI: 10.18577/2307-6046-2019-0-12-3-10. URL: https://test.viam.ru/en/journal/2019/12/1
Keywords
Ni-base superalloy, microstructure, nanophase, stability, fracture.
Abstract

The investigation of the stability of nano-sized γʹ-phase particles in cast-and-wrought Ni-base Superalloy VZh175-ID are presented. It was carried out after tension testing at room temperature, after rupture strength testing at the maximum working temperature and stresses and also after rupture strength testing at regimes, which are distinctive for the real parts of high pressure turbine. The contribution of grain-boundary particles γ'-phase with size below 100 nm in the strengthening mechanism was shown for cast-and-wrought Ni-base Superalloy VZh175-ID at high temperatures.

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