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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing of Refractory Metallic Materials
Presentation Title Laser Powder-bed-fusion of Pure Tungsten for Fusion Energy Applications
Author(s) Alberico Talignani, Shiqi Zheng, Philip DePond, Maria Strantza, Jianchao Ye, Y. Morris Wang
On-Site Speaker (Planned) Alberico Talignani
Abstract Scope 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.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Other, Other


Additive Manufacture of Refractory Metals for Aerospace Applications
Additive Manufacturing of Refractory High Entropy Alloys
Case Studies on Additive Manufacturing of Refractory Materials
Design and Development of 3D Printable Nb-based Alloys for High Temperature Applications
Effect of Minor Titanium and Aluminum Addition on Ductility of Refractory High Entropy Alloy
Electron Beam Melting Additive Manufacturing of Pure Molybdenum
Enhancement of the Thermal Conductivity of Inconel 718 with the Addition of Tungsten
Fabrication of Pure Tungsten Using Electron Beam Powder Bed Fusion
Laser Assisted Cold Spray Deposition for Niobium and Tantalum Materials
Laser Beam Directed Energy Deposition Process Optimization for Refractory High Entropy Alloys
Laser Powder-bed-fusion of Pure Tungsten for Fusion Energy Applications
LPBF Printing of Nb for the Production of 3D Resonance Cavities
Mechanical Properties and Microstructural Characteristics of Additively Manufactured C103 Niobium Alloy
Refractory Development Framework Using Computational Modeling
Refractory Metals – Some Historical Observations
Study of Melt-pool Geometry and Microstructure in Pure W by Powder-feed Directed Energy Deposition
Thermal-chemical-fluid Flow of Dissimilar Species Mixing between Titanium and Refractory Metals
Union of Mo and Cr Alloys into a Single Multi-materials Part Using Laser-powder Directed Energy Deposition

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