About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Special Topics in Nuclear Materials: Reproducibility and Uncertainty; Hydrogen Effects; Space and Microreactor Systems
|
| Presentation Title |
Post Irradiation Examination of an Irradiated 6061-T6 Aluminum Proton Beam Window |
| Author(s) |
David McClintock, Maxim Gussev, Tim Lach, Soyoung Kang |
| On-Site Speaker (Planned) |
David McClintock |
| Abstract Scope |
The mechanical properties of components operated in high radiation environments change during operation, and lifetimes of these components are difficult to define without experimental results for a particular material and radiation environment of interest. Post irradiation examination (PIE) of components after removal from service is the best method for characterizing the radiation-induced changes to mechanical properties and microstructure. A PIE program is maintained at the Spallation Neutron Source (SNS) for proton beam windows (PBW) and targets to inform decisions on administrative lifetime limits. Recently, tensile tests and microstructure characterizations were performed on PIE samples removed from a 6061-T6 aluminum PBW operated at the SNS to a maxim dose of approximately 4.4 dpa and transmutation product concentrations of 2100 appm helium and 3600 appm hydrogen. The results from tensile testing and microstructure characterization will be presented, and the lifetime limit philosophy employed at the SNS for aluminum PBWs will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Mechanical Properties |