About this Abstract |
Meeting |
Superalloys 2024
|
Symposium
|
Superalloys 2024
|
Presentation Title |
A-1: A Novel Wrought Ni-based Superalloy with High-temperature Strength, Resistance to Creep Rupture and Resistance to Oxidation |
Author(s) |
Matthew D. Bender, Rafael Rodriguez De Vecchis, Joseph A. Jankowski |
On-Site Speaker (Planned) |
Matthew D. Bender |
Abstract Scope |
ATI 273™ alloy was developed to be a fabricable, creep-resistant, and oxidation-resistant superalloy. This paper summarizes material characterization of early vacuum-melted lab heats focusing primarily on its oxidation resistance, though high-temperature strength properties will also be addressed. Short- and long-term continuous isothermal exposure data for 871 and 982 °C testing in dry air will be presented with an emphasis on understanding the impact of Ta addition on scale formation. Furthermore, cyclic exposure testing in flowing air was carried out to assess oxide scale adhesion and healing. ATI 273 has an intentional tantalum addition of 2.5 wt. %, and this impactful element increases the alloy’s resistance to both oxidation and creep. This paper will show the alloy’s improved properties are linked to Ta addition and Ti reduction in the chemistry leading to improved properties compared to ATI 263™ and Haynes® 282® alloys. ATI 273 is being considered for high temperature structural applications, especially those for land-based gas turbine and aerospace engines. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |