| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Refractory Metallic Materials
|
| Presentation Title |
Impact of Stochastic Scanning Strategies in Electron Beam Powder Bed Fusion of Tungsten Alloys |
| Author(s) |
Shashank Sharma, Sheldon Dowden, Zane Hughes, Rohit Randhaven, Krishna Kamlesh Verma, Sameehan S Joshi, Narendra B Dahotre |
| On-Site Speaker (Planned) |
Shashank Sharma |
| Abstract Scope |
The primary challenge associated with fusion-based additive manufacturing (AM) of tungsten and its alloys is densification and cracking. The present study explores the applicability of the stochastic point-based layer melting strategy (Opensource FreemeltOne Electron Beam Melting system) towards mitigating such process defects. In addition, high-fidelity multiphysics modeling is leveraged to understand the role of melt hydrodynamics, pre/post-heating, and residual stress evolution with such unique scanning strategies. Lastly, an in-situ back-scatter electron imaging system is utilized to understand the evolution of layer-by-layer process defects. In sum, a physics-informed experimental framework is presented that can tackle challenges associated with process defects related to AM of refractory materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, |