An influence of operational factors on the state of interfaces in high heat-resistant Ni-based alloys intended for GTE discs

Chabina E.B.
UDC
669.018.44:669.245
DOI
10.18577/2307-6046-2015-0-8-2-2
Article PDF (Russian) (616.8 KB)
How to cite
Chabina E.B. An influence of operational factors on the state of interfaces in high heat-resistant Ni-based alloys intended for GTE discs // Proceedings of VIAM. 2015. No. 8. DOI: 10.18577/2307-6046-2015-0-8-2-2. URL: https://test.viam.ru/en/journal/2015/8/2
Abstract

Changes in structure and chemical composition of grain boundaries in Ni–Co–Cr–Al–Ti–W–Mo–Nb wrought heat-resistant alloys after simulation of operation and operation in GTE disk structure were investigated. The researches have shown that there is a relationship between operational properties and the state of internal interfaces (grain boundaries). The determined regularities are general for Ni–Co–Cr–Al–Ti–W–Mo–Nb wrought Ni-based alloys with different content of alloying elements. It was stated that the mechanisms of a decreasing in cohesive strength of grain boundaries are different after holding within different temperature intervals.

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