| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Effect of α` Chromium-rich Precipitates on the Tensile Properties of Commercial FeCrAl Alloy |
| Author(s) |
Hamdy Abouelella, Andrew Hoffman, Rajnikant Umretiya, Nathan Almirall, Benjamin Beeler, Raul Rebak |
| On-Site Speaker (Planned) |
Hamdy Abouelella |
| Abstract Scope |
FeCrAl alloys have been considered a candidate for accident tolerant fuel-cladding and structural materials because of their high-temperature strength and superior oxidation resistance. However, the tendency to form α` chromium-rich precipitates increases the hardness and decreases the ductility of the alloy. Kanthal APMT tubes, an advanced FeCrAl alloy, were thermally aged at 450℃ for 1000 hours to form α` precipitates. Subsequently, tensile tests were performed at two different temperatures with as-received and aged tubes to understand the effect of α` chromium-rich precipitates on tensile properties. The results show that α` precipitates will indeed increase the strength and slightly decrease the ductility. However, the tensile strength concomitantly increases, offsetting that ductility drop. The results indicated that alpha prime precipitates do not preclude FeCrAl use as a cladding material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Nuclear Materials, Phase Transformations |