Evidence for internal oxidation during oxygen enhanced crack growth in P/M Ni-based superalloys
| Autor: | Christopher Francis Miller, Robert P. Wei, Gary W. Simmons |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Materials science
Mechanical Engineering Metallurgy Alloy Metals and Alloys Niobium chemistry.chemical_element Fracture mechanics Fractography engineering.material Condensed Matter Physics Oxygen humanities Superalloy chemistry.chemical_compound chemistry Mechanics of Materials mental disorders engineering Niobium carbide General Materials Science Internal oxidation |
| Zdroj: | Scripta Materialia. 48:103-108 |
| ISSN: | 1359-6462 |
| Popis: | A surface chemistry study on P/M alloys confirmed (a) the preferential oxidation of Nb, Ti, Al and Cr on heated, polished surfaces and (b) the penetration of oxygen ahead of the crack tip during crack growth, leading to the oxidation of Nb, Ti, Al and Cr. These results support previous crack growth enhancement mechanisms for Ni-based superalloys that involve the oxidation of alloy phases ahead of the crack tip. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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