About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Transmutation Effects in Materials in Fission, Fusion, and Spallation Environments
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| Presentation Title |
Effects of transmutation products in Spallation Neutron Source structural alloys |
| Author(s) |
Timothy G. Lach, Weicheng Zhong, Hsin-Yun Chao, Soyoung Kang, Maxim Gussev, Hsin Wang, David McClintock |
| On-Site Speaker (Planned) |
Timothy G. Lach |
| Abstract Scope |
High energy (100-1000 MeV) accelerator beam lines and spallation neutron sources induce material responses unique from irradiation with fission/fusion neutrons. The target module and proton beam window (PBW) at the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory are irradiated in these unique environments during operation. In addition to recoil damage up to ~10-20dpa at moderately low temperatures (~100°C), transmutation reactions produce large levels of H/He (100s of appm/dpa). To maintain and enhance neutron production at the SNS, accurate understanding of the radiation-induced changes to the microstructure and mechanical properties is essential, with particular focus here on the interactions with H/He. The materials presented are 316L stainless steel, Inconel 718, and Al-6061-T6 alloys, characterized with a broad suite of techniques. The microstructural processes responsible for the deformation behaviors provide insights that could enable the lifetime extension of SNS components and could be exploited in the development of radiation-resistant materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Aluminum |