About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Feedstock Processing for Multifunctional Materials
|
| Presentation Title |
New Strategies to Develop In-Situ and Ex-Situ TiB₂-Reinforced Al Composites Manufactured by PBF-LB/M |
| Author(s) |
Giorgia Lupi, Neyder Aleixer Sandaval Vargas, Luca Mariotti, Sophia Alexandra Tsipas, Luca Patriarca, Riccardo Casati |
| On-Site Speaker (Planned) |
Riccardo Casati |
| Abstract Scope |
The development of aluminum matrix composites reinforced with ceramic particles presents a promising avenue for advanced structural applications. This study introduces novel strategies for fabricating TiB₂-reinforced aluminum composites using PBF-LB/M. The research explores the integration of advanced powder preparation techniques—fluidized bed chemical vapor deposition (FB-CVD), mechanical mixing, and pre-alloying by gas atomization to enhance the dispersion of ceramic particles within an aluminum matrix. FB-CVD is employed to uniformly coat aluminum powder particles with boron, enabling in-situ Al-TiB2 composite formation during PBF-LB/M processing. Concurrently, gas atomization is used to produce spherical pre-alloyed Al-TiB₂ powders with optimized flowability and PSD for additive manufacturing. To enhance the elastic modulus of the alloy, additional TiB₂ particles were dispersed using a mechanical mixing method. Comparative microstructural analyses revealed unexpected precipitation sequences in the 2xxx series aluminum matrix, attributed to the presence of Ti. Mechanical testing demonstrated promising results, indicating the composites’ suitability for structural applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Powder Materials |