Abstract
Niobium was found to be beneficial for alumina scale formation in newly developed creep-resistant austenitic stainless steels. Additions of both Ti and V degraded alumina scale formation, whereas alloys with individual additions of Ti or V were able to form protective alumina scales. The ability to form external alumina scales was lost in the lower Al- and Nb-containing alloys between 800 and 900 °C. Compositions with the potential to form alumina at 900 °C were identified.
| Original language | English |
|---|---|
| Pages (from-to) | 1117-1120 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 57 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2007 |
Funding
The authors thank J.R. Keiser and I.G. Wright for helpful comments on this manuscript. This work was funded by the United States Department of Energy (USDOE), Fossil Energy Advanced Research Materials program. Additional funding and collaboration with the US DOE Distributed Energy program is acknowledged. Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the US DOE under contract DE-AC05-00OR22725. The SHaRE User Facility at Oak Ridge National Laboratory, sponsored by the US Department of Energy, Office of Basic Energy Sciences, Division of Scientific User Facilities, is also acknowledged.
Keywords
- Austenitic steels
- Heat-resistant steels
- Internal oxidation
- Oxidation
- Oxides
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