Study of heat-resistant nickel alloy with γ-phase structure scaling resistance

Study of heat-resistant nickel alloy with γ-phase structure scaling resistance

Features of high-temperature oxidation of N70VTYu-ID alloy with γ‑solid solution structure are studied. It is shown that characteristics describing this process stabilize with increasing oxidation time. The calculated oxidation activation energy is ~220,000 ± 5000 J/mol, which is comparable to the n...

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Veröffentlicht in:Metallurgist (New York) 2024-11, Vol.68 (7), p.984-991
Hauptverfasser: Molyarov, V. G., Belomyttsev, M. Yu
Format: Artikel
Sprache:eng
Schlagworte:
Activation energy
Characterization and Evaluation of Materials
Chemistry and Materials Science
Heat resistant alloys
Heat treatment
High temperature
Materials Science
Metallic Materials
Nickel
Oxidation resistance
Scale (corrosion)
Self diffusion
Solid phases
Solid solutions
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Zusammenfassung:Features of high-temperature oxidation of N70VTYu-ID alloy with γ‑solid solution structure are studied. It is shown that characteristics describing this process stabilize with increasing oxidation time. The calculated oxidation activation energy is ~220,000 ± 5000 J/mol, which is comparable to the nickel self-diffusion activation energy. Influence of preliminary short-term high-temperature oxidation on alloy scale resistance is investigated. It is shown that this combined heat treatment can briefly increase N70VTYu-ID alloy scale resistance.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-024-01807-1