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 |
Microstructural and properties evolution of tungsten irradiated with high energy protons and spallation neutrons |
| Author(s) |
Timothy G. Lach, Brian Ensign, David Collins, Thomas Muth, Marco Martinez, Hsin Wang, Stephen Taller, Yong Joong Lee |
| On-Site Speaker (Planned) |
Timothy G. Lach |
| Abstract Scope |
High energy (100-1000 MeV) proton beams and spallation neutrons induce material responses unique from irradiation with fission/fusion neutrons; however, they can provide valuable insights into the behavior in fusion environments due to the high energy neutrons, which are currently unavailable for researchers due to the lack of a prototypic fusion neutron source. Tungsten target rods were irradiated with 800 MeV protons at the Los Alamos Neutron Science Center to damage doses up to 23.3 dpa at relatively low temperatures (~50-270 °C). The combined high energy proton and spallation neutron environment contributed to significant generation of both solid and gaseous transmutation products. An extensive post-irradiation examination campaign was carried out to examine the evolution of strength, hardness, fatigue, thermal diffusivity, electrical resistivity, and microstructure. The microstructural processes responsible for the mechanical and thermophysical properties evolution provide insights for the development of tungsten alloys and tungsten targets for fusion and spallation applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Mechanical Properties |