|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Refractory Metallic Materials
||Laser Powder-bed-fusion of Pure Tungsten for Fusion Energy Applications
||Alberico Talignani, Shiqi Zheng, Philip DePond, Maria Strantza, Jianchao Ye, Y. Morris Wang
|On-Site Speaker (Planned)
Tungsten is the material-of-choice for plasma facing components in fusion reactors. Additive manufacturing (AM) tungsten offers abundant design freedom and reduces cost. Due to its intrinsic brittleness, caused by a ductile-to-brittle transition temperature above room temperature (500-700K) and impurities, tungsten is prone to cracking during manufacturing. This presentation reports the progresses of our effort to AM tungsten via laser powder-bed-fusion (L-PBF). Achieving crack-free L-PBF tungsten samples has not been possible in the literature. Understanding crack formation and propagation, and how to suppress them during L-PBF is thus crucial. Single track experiments with a broad range of laser conditions have been explored to obtain optimized processing conditions. The results from both continuous wave and pulsed wave lasers will be presented. We further report the successful fabrications of near fully dense W samples and discuss the strategies that aim to resolve the challenging issues of cracking in L-PBF tungsten.
||Additive Manufacturing, Other, Other