| Autor: |
Moffat, James P., Whitfield, Tamsin E., Christofidou, Katerina A., Pickering, Ed J., Jones, Nicholas G., Stone, Howard J. |
| Předmět: |
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| Zdroj: |
Metals (2075-4701); Feb2020, Vol. 10 Issue 2, p248, 1p |
| Abstrakt: |
Degradation of the mechanical integrity of cobalt-based superalloys can occur as the carbide network is progressively oxidised during high temperature service. In this study, a heat-treatment aimed at redistributing the carbides was tested on two similar commercial Co-based superalloys, one with high C content (Co-101) and one with low C content (Stellite-21), to determine its influence on oxidation resistance. It was found that the carbide phases in the lower C-containing alloy could be solutioned more readily than the higher C-containing alloy, enabling the continuity of the carbide network to be reduced. This resulted in a reduced attack of the carbides down the interdendritic channels during oxidation testing, but increased thickness of the oxide overscale. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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