| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-132: On the Influence of Nitrogen on the Performance of Austenitic Stainless Steel 316L Processed by SLM |
| Author(s) |
Julia Richter, Thomas Niendorf |
| On-Site Speaker (Planned) |
Julia Richter |
| Abstract Scope |
Selective Laser Melting (SLM) is a metal-powder based layer-by-layer additive manufacturing technique, where powder is distributed in thin layers and subsequently melted by a laser only guided by a CAD-file. The SLM process is widely used for processing of the titanium alloy Ti6Al4V, the nickel-based alloy Inconel 718 and the austenitic stainless steel 316L. These materials have been studied numerously upon processing under inert argon atmosphere and correlations between processing parameters and microstructural as well as mechanical properties are available. In the current study, 316L was processed under nitrogen atmosphere. The change of process gas results in different parameters needed for robust processing. This is due to different heat dissipation in the built process eventually leading to changes in microstructure and mechanical properties. The study comprises the microstructural analysis of the as-built condition as well as characterization of mechanical properties under quasi-static and cyclic loading. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |