| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments
|
| Presentation Title |
Superior High-temperature Tensile Properties of Fine Equiaxed-grained 316L Stainless Steel Fabricated by Electron Beam Powder-bed Fusion |
| Author(s) |
Jong-Soo Bae, Kwang Hyeok Lim, Shubham Chandra, Xipeng Tan, Gi-Dong Sim |
| On-Site Speaker (Planned) |
Jong-Soo Bae |
| Abstract Scope |
Powder-bed fusion additive manufacturing (PBF-AM) technology has attracted significant interest as a disruptive manufacturing method that can promptly and precisely produce complex near-net-shape metallic structures. Typically, PBF-AMed metal alloys possess exceptional mechanical properties arising from the unique microstructural features due to extremely large thermal gradients and rapid cooling rates. In this study, we have investigated the mechanical behavior of fine equiaxed-grained 316L stainless steel fabricated by electron beam powder-bed fusion (EB-PBF) technology with optimized process parameters. Superior isotropic tensile properties are found from room temperature to 600 ℃. The superior tensile properties at various temperatures can be explained by the grain boundary strengthening, the Orowan strengthening induced by amorphous silicon oxide nanoparticles, as well as the particular dynamic strain aging and dynamic recrystallization mechanisms at elevated temperatures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Iron and Steel |