About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
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Symposium
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Advances in High-Temperature Oxidation and Degradation of Materials for Harsh Environments: A SMD and FMD Symposium Honoring Brian Gleeson
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Presentation Title |
The Impact of Tantalum Addition on Oxide Formation of a Novel Ni-Cr-Co-Mo Superalloy |
Author(s) |
Matthew D. Bender, Rafael Rodriguez De Vecchis |
On-Site Speaker (Planned) |
Matthew D. Bender |
Abstract Scope |
ATI 273TM alloy is a new nickel-based, γ′-strengthened superalloy with an intentional addition of tantalum for improved resistance to creep-rupture and oxidation at elevated temperature. At intermediate temperatures, this alloy forms an external chromia scale on top of CrTiTaO6 oxide. At even higher temperature, this alloy forms a continuous alumina scale despite its relatively low aluminum content. The role of tantalum in promoting protective oxide formation on ATI 273 will be explored through oxidation experiments and material characterization. The alloy’s oxide formation and oxidation resistance will be compared against commercial non-Ta-bearing superalloys. |