| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Investigation on the Processing Parameter Effects on Microstructural Evolution of YTiO- Reinforced SS 316L Nanocomposites Via Wire-Powder Fed Directed Energy Deposition |
| Author(s) |
Seongun Yang, Kwangtae Son, Zhengming Wang, Tyler Finch, Donghua Xu, Chih-hung Chang, Marc Albert, Somayeh Pasebani |
| On-Site Speaker (Planned) |
Seongun Yang |
| Abstract Scope |
This study investigates the optimal processing parameters of yttrium titanate (YTiO) reinforced stainless steel 316L composites produced by wire-powder fed directed energy deposition (WP-DED). Submicron YTiO was added to SS 316L to create oxide dispersion strengthened (ODS) nanocomposites. The composite was fabricated by supplying SS316L-1.2wt% YTiO ball-milled powders to the wire-printing 316L coupons during the laser directed energy deposition (LDED) process. Laser powers between 500 W and 900 W and scan speeds from 400 mm/min to 800 mm/min were tested to determine optimal processing parameters. The SS316L wire feed rate matched the laser scan speed, while the composite powder feed rate was 1.5 L/min. Geometrical parameters such as aspect ratio (>3) and dilution depth (20-30%) were measured to evaluate printing adequacy. The optimal parameters were found to be 900 W and 600 mm/min. Microstructural observations of the printed coupons were performed to understand the relationship between processing conditions and microstructures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Process Technology |