| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Fatigue and Fracture III
|
| Presentation Title |
Effect of Microstructure and Defects on the Fatigue Performance of Additively Manufactured 2205 Duplex Stainless Steel |
| Author(s) |
Jayme S. Keist, Andrew Iams, Griffin Jones, Todd A. Palmer |
| On-Site Speaker (Planned) |
Jayme S. Keist |
| Abstract Scope |
For additive manufacturing (AM) of metallic alloy systems, it is important to understand how the unique structures that are obtained by the AM process impacts the resulting performance of the AM component for structural applications. This investigation evaluated the fatigue performance of AM 2205 duplex stainless steel specimens that were produced by laser based directed energy deposition (DED). The AM specimens underwent high cycle fatigue testing in both the as-deposited and after hot isostatic pressing (HIP) conditions. To help understand the role of defects on the fatigue behavior, the crack initiation and propagation characteristics was analyzed on the fracture surface. Although the microstructure of the AM 2205 specimens exhibited similar morphologies to wrought specimens, the AM 2205 did not exhibit an anisotropic microstructure as was observed in wrought 2205. This difference within the microstructure appeared to impact the resulting fatigue behavior of the AM 2205 duplex stainless steel specimens. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |