About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Response of Precipitation-Hardened Alloy A709 Following Neutron Irradiation |
| Author(s) |
Caleb Massey, Jesse Werden, David Collins, Annabelle Le Coq, Nick Russell, Kory Linton |
| On-Site Speaker (Planned) |
Caleb Massey |
| Abstract Scope |
The Advanced Materials and Manufacturing Technologies (AMMT) is initiating a comprehensive irradiation campaign of advanced austenitic alloy A709 to establish performance knock-down factors to supplement the near-final ASME code case. Initial irradiations have been completed to scope prospective irradiation degradation phenomena and to calibrate test data needs for larger campaign testing. Precipitation-hardened A709 tensile and fracture toughness specimens were included in HFIR irradiation capsules and subjected to a neutron displacement damage level of ~2 displacements per atom at target irradiation temperatures of 400C and 600C. Following irradiation, tensile testing was conducted at room temperature and at temperatures equivalent to measured irradiation temperatures. In addition, a series of variable strain rate testing was performed at elevated temperature to evaluate the alloy’s susceptibility to high-temperature helium embrittlement. The results of these initial post-irradiation examination results are provided along with how identified phenomena will be addressed in future experiments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Nuclear Materials, Mechanical Properties |