| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
|
| Presentation Title |
Creep Behavior of Stainless Steel 316L Manufactured by Laser Powder Bed Fusion |
| Author(s) |
Luis Avila, Birgit Rehmer, Sina Schriever, Alexander Ulbricht, Leonardo Agudo Jácome, Gunther Mohr, Birgit Skrotzki, Alexander Evans |
| On-Site Speaker (Planned) |
Luis Avila |
| Abstract Scope |
This contribution presents the results of an experimental study on the creep behavior of an austenitic 316L stainless steel produced by laser powder bed fusion (PBF-LB/M/316L) in two heat-treated conditions. The produced PBF-LB/M/316L exhibits a low void population (0.01 %), i.e., the emphasis lies on understanding the effects of other microstructural aspects and its evolution on creep mechanisms. Hot tensile tests and constant force creep tests at 600 °C and 650 °C, X ray computed tomography, as well as optical and electron microscopy were performed. When compared to a hot‑rolled 316L variant, the produced PBF-LB/M/316L possesses shorter primary and secondary creep stages and times to rupture, and the creep damage is more extensive and characterized as predominantly intergranular. Overall, a combination of factors including the dislocation substructure and local elemental segregation, and the formation of precipitates at the grain boundaries appear to have a decisive impact on the creep behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Mechanical Properties |