About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Rapid Qualification
|
| Presentation Title |
Low-Cycle-Fatigue Behavior of Stainless Steel 316L Manufactured by Laser Powder Bed Fusion |
| Author(s) |
Luis Avila, Birgit Rehmer, Alexander Ulbricht, Gunther Mohr, Alexander Evans, Birgit Skrotzki |
| On-Site Speaker (Planned) |
Luis Avila |
| Abstract Scope |
This contribution presents the results of an experimental study on the LCF behavior of an austenitic 316L stainless steel produced by laser powder bed fusion featuring a low defect population, which allows for an improved understanding of the role of other typical aspects of a PBF‑LB microstructure. The LCF tests were performed between room temperature and 600 °C. A hot‑rolled 316L variant was tested as a reference. The mechanical response is characterized by strain-life curves, a Coffin‑Manson‑Basquin fitting, and hysteresis and cyclic deformation curves. The damage and deformation mechanisms are studied with X-ray computed tomography, optical and electron microscopy, and by analyzing the Masing behavior. The PBF‑LB/M/316L exhibits lower fatigue lives at lower strain amplitudes. Depending on testing parameters and microstructure, crack initiation, and propagation can be inter- and transgranular. The solidification cellular structure seems to be the most relevant underlying microstructural feature determining the cyclic deformation behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Iron and Steel, Characterization |