| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Components
|
| Presentation Title |
Void Swelling and Transmutation in Tungsten Metals and Alloys after Fusion Relevant Neutron Irradiation |
| Author(s) |
Daniel Morrall, John Echols, Josina Geringer, Lauren Garrison, Chad Parish |
| On-Site Speaker (Planned) |
Daniel Morrall |
| Abstract Scope |
PHENIX is a U.S.-Japan collaboration for the technological assessment of plasma facing components for experimental fusion power plants. One of the main goals of this experiment is to understand the thermomechanical properties of tungsten irradiated with a transmutation-to-dpa ratio relevant to fusion plasma facing components (PFCs). PFC candidate materials were irradiated in HFIR at ORNL at fusion relevant temperatures in gadolinium shielded capsules, reducing the thermal-to-fast neutron flux ratio ~10x. Four samples were chosen for post irradiation analysis; rolled foil tungsten (RFW), single crystal tungsten (SCW), polycrystalline tungsten (PCW), and W-Re alloy (WRA). In this work we have analyzed these samples using conventional and scanning transmission electron microscopy ((S)TEM) and energy dispersive x-ray spectroscopy (EDS). Preliminary comparisons of each sample reveal the fewest cavities in WRA affecting the Orowan hardening calculations which may offer an explanation to the mechanism of reduced embrittlement of other W-Re alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, |