| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Meeting Materials Challenges for the Future of Fusion Energy
|
| Presentation Title |
In Situ Micropillar Compression Study of Ultra-Fine-Grained Tungsten at Elevated Temperature |
| Author(s) |
Yifan Zhang, Chao Shen, Adil Wazeer, Ke Xu, Tanner O McElroy, Anyu Shang, Haiyan Wang, Xinghang Zhang |
| On-Site Speaker (Planned) |
Yifan Zhang |
| Abstract Scope |
Tungsten is a promising candidate for constructing plasma-facing components in fusion reactors. However, its limited ductility and high brittle-to-ductile transition temperature restrict its use as a structural material. Reducing the grain size can potentially enhance the ductility of Tungsten. This study examines the mechanical behavior of ultra-fine-grained (UFG) Tungsten through in situ micropillar compression at temperatures up to 740 °C. Our findings demonstrate temperature-dependent work hardening and deformability in UFG Tungsten. Post-compression analysis reveals shear localization in Tungsten tested at room temperature, whereas a more uniform deformation occurs at 400 °C and above. Detailed deformation mechanisms will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, High-Temperature Materials |