About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Nanoprecipitate Strengthened Vanadium Alloy for Fusion Energy Applications |
| Author(s) |
Qing-Qiang Ren, David J. Sprouster, Yanli Wang, Xiang Chen, Yi-Feng Su, Jonathan D. Poplawsky, Lance L. Snead, Yutai Katoh, Steven J. Zinkle, Ying Yang |
| On-Site Speaker (Planned) |
Qing-Qiang Ren |
| Abstract Scope |
The V-4Cr-4Ti (V44) alloys have been proposed as the prime candidate structural material for fusion energy applications, its applications, however, are limited to a narrow operation temperature window, due to reduction in creep strength at or above 700 °C and susceptibility to irradiation hardening and embrittlement below 400ºC. Herein, we explore the feasibility of designing a novel V alloy that forms a high number density of TiC nanoprecipitates, to simultaneously improve creep strength and provide defect sinks to mitigate irradiation hardening. With the aid of computational thermodynamics, a new alloy (V44C) was designed and fabricated through arc-melting and ingot-casting followed by hot forging, cold rolling and heat treatments of homogenization and precipitation aging. The microstructure of the new alloy was characterized in detail, confirming the existence of nanoprecipitates predicted. Tensile properties at RT and 700C, and Charpy impact energy at RT were measured, and compared with the reference V44 alloy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, High-Temperature Materials, Nuclear Materials |