| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Crack Mitigation Strategies for Pure Tungsten via Laser Powder-bed-fusion |
| Author(s) |
Alberico Talignani, Shiqi Zheng, Philip DePond, Maria Strantza, Jianchao Ye, Y. Morris Wang |
| On-Site Speaker (Planned) |
Alberico Talignani |
| Abstract Scope |
Laser powder-bed-fusion (L-PBF) of pure tungsten combines the remarkable properties of the element, which make it suitable for applications in extreme environments, with a freedom of design that is largely unmatched in metal additive manufacturing. Tungsten is susceptible to cracks during manufacturing because of its high ductile-to-brittle transition temperature (DBTT). To date, the issue of cracking in tungsten manufactured via L-PBF has not been resolved. We report our progress on the processing control of L-PBF tungsten and its role in crack mitigation. A variety of laser parameters, as well as different types of L-PBF machines, have been used to uncover strategies to suppress cracks. Processing models are under development to help enhance our understanding of cracking behavior in pure tungsten.
The work at Lawrence-Livermore-National-Laboratory was performed under auspices of Department of Energy under contract DE-AC52-07NA27344. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, Other |