|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Refractory Metallic Materials
||Study of Melt-pool Geometry and Microstructure in Pure W by Powder-feed Directed Energy Deposition
||Amaranth Karra, Maarten de Boer, Bryan Webler
|On-Site Speaker (Planned)
This study examines melt pool geometry and microstructure of pure tungsten deposited by powder-feed directed energy deposition additive manufacturing. Single beads and pads of material were deposited on tungsten and steel base plates. A model predicting melt pool geometry, layer height, and bead composition as a function of powder, travel speed, and powder feed rate was developed and assessed by the experimental results. The microstructure and cracking of the tungsten beads and pads was also assessed and the behavior between different base plates was compared. Results showed how melt pool geometry predictions can guide process parameter selection and the effect of base plate and process parameters on build quality.
||Additive Manufacturing, High-Temperature Materials, Modeling and Simulation