| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
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| Presentation Title |
Performance Assessment of YTiO-Enhanced 316L Stainless Steel Nanocomposites Fabricated by Laser Directed Energy Deposition |
| Author(s) |
Seongun Yang, Kwangtae Son, Zhengming Wang, Nahal Ghanadi, Donghua Xu, Chih-hung Chang, Marc Albert, Somayeh Pasebani |
| On-Site Speaker (Planned) |
Seongun Yang |
| Abstract Scope |
The wire-powder fed directed energy deposition (WP-DED) process enables the high-rate fabrication of nanoscale ceramic-metal composites compared to other additive manufacturing methods. This study examines the effects of adding submicron yttrium titanate (YTiO) to stainless steel 316L on the mechanical properties and microstructure evolution of laser directed energy deposition (LDED) SS 316L oxide dispersion strengthening (ODS) nanocomposites. The YTiO-SS 316L composite was produced by supplying SS316L-1.2wt% YTiO ball-milled powders to the wire-printing 316L coupons during the LDED process. Additionally, a heat treatment at 800°C for 100 hours was performed to assess the commercial durability of the ODS alloy. The effects of this treatment were evaluated via tensile tests at room temperature, revealing the influence on strength and ductility. For further evaluation, high-temperature tensile tests were conducted at 600°C and 800°C on the as-printed samples to assess their functionality and performance under service conditions, demonstrating the composite’s potential for high-temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Mechanical Properties |