| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
LPBF Consolidation of Precipitate Strengthened Fe-18Ni-9Co-5Mo-1Ti Alloy Through the Use of Elemental Powders on the Fly Versus the Use of Pre-Alloyed Powder |
| Author(s) |
Matthew deJong, Sourabh Saptarshi, Tim Horn, Djamel Kaoumi |
| On-Site Speaker (Planned) |
Matthew deJong |
| Abstract Scope |
Additive manufacturing frequently relies upon the use of prealloyed gas atomized powders for processing of alloys. Pre-alloying enables consistent chemistries throughout the batch, and spherical powder helps with spreading even layers in powder bed fusion techniques. For this study, Laser Powder Bed Fusion (LPBF) is used for consolidating batches of mixed elemental powders versus pre-alloyed powder, to determine if pre-alloying is necessary prior to consolidation. Identical printing conditions are used across batches to understand how powder processing routes influence the microstructure formed. Transmission Electron Microscopy (TEM) of Focused Ion Beam (FIB) lift-outs and SEM imaging were used to evaluate how porosity and precipitation varied as a result of powder processing technique for an Fe-18Ni-9Co-5Mo-1Ti alloy, that relies on precipitate strengthening. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Characterization |