| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
On the Melt Pool Dynamic of Metal Matrix Composites via Hybrid Additive Manufacturing: Laser Powder Bed Fusion and Ink-Jetting |
| Author(s) |
Milad Ghayoor, Omid Sadeghi, Bryce Cox, Joshua Gess, Somayeh Pasebani |
| On-Site Speaker (Planned) |
Somayeh Pasebani |
| Abstract Scope |
In this study, the effect of the addition of reinforcement nanoparticles to the 316L matrix by adopting ex-situ and in-situ methods to produce 316L/Al2O3 nanocomposite was investigated. In the ex-situ method, the Al2O3 nanoparticles (NPs) were lightly mixed with 316L powder and processed by laser powder bed fusion. In the in-situ method, an ethanol-based ink containing Al13 nanoclusters (NCs) was added to 316L powder and then processed by laser. Both ex-situ and in-situ methods produced nanocomposites with Al-Si-Mn-O-enriched precipitations within the 316L matrix. The addition of NPs/NCs to the 316L matrix, altered the geometrical characteristic of the single-track melt pools. At a high laser power of 150 W, the Marangoni flow and the buoyancy force caused the nanoparticles to agglomerate and float to the top surface of tracks. Lastly, a hybrid LPBF+ink-jet printer was adopted to selectively change the composition of different zones by adding Al13 NCs ink to 316L |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Composites, Characterization |