About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Reusable Rocket Engines
|
| Presentation Title |
Microstructural and Mechanical Characterization of Nano-Yttria Reinforced IN718 via L-PBF |
| Author(s) |
Aylin Aktaş, Mertcan Başkan |
| On-Site Speaker (Planned) |
Aylin Aktaş |
| Abstract Scope |
To address the limitations of conventional materials in aerospace engines, this study develops high-yield-strength components via additive manufacturing. An oxide dispersion strengthened (ODS) alloy was produced using IN718 as the base metal and nano-sized yttrium oxide (Y₂O₃) as reinforcement. IN718 powders were coated with 2 wt.% and 4 wt.% Y₂O₃ through mechanical alloying by optimizing ball size and ball-to-powder ratio. A process matrix for Laser Powder Bed Fusion (L-PBF) was created by varying laser power and scan speed to achieve low porosity, uniform melt pool geometry, and enhanced secondary phase formation. Microstructural characterization was carried out using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to assess particle dispersion and nanoscale features. Tensile tests at room and high temperatures were performed to evaluate the mechanical performance. The results highlight the potential of nano-Y₂O₃-reinforced IN718 alloys for high-temperature aerospace applications enabled by additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, |