| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
Fusion Plasma Relevant Erosion of Reduced Activation High Entropy Alloy-based lPasma-facing Material |
| Author(s) |
Owais Ahmed Waseem, Kevin Woller, Faris Sweidan, Ho Jin Ryu |
| On-Site Speaker (Planned) |
Owais Ahmed Waseem |
| Abstract Scope |
Reduced activation high-entropy alloy (HEA)-based material offers many benefits over pure W for future fusion plasma-facing applications. To evaluate the erosion behavior of a leading HEA-based material, W0.5(TaTiVCr)0.5, depth marker implantation and nuclear reaction analysis are used. A depth marker ~1.5µm below the plasma-facing surface was implanted using 5.0 MeV F3+ ions and 3.2x1012 ions/cm2 fluence, the effects of implantation on the microstructure and mechanical properties of W0.5TaTiVCr were assessed using atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and nanoindentation tests. Depth marker implantation, which developed pinholes and nanostructure on hot-rolled pure W, showed little to no modification of the microstructure of W0.5(TaTiVCr)0.5 under the present conditions. However, an increase of ~2.5 GPa in hardness of W0.5(TaTiVCr)0.5 was observed due to irradiation hardening. The plasma exposure of depth marker implanted W0.5(TaTiVCr)0.5 is being done for erosion analysis and will be presented in comparison to pure W. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, High-Temperature Materials |