| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Processing-Microstructure-Properties Relations in Open Air Additive Manufacturing of Stainless Steel 316L |
| Author(s) |
Hunter Rauch, Mala Sharma, Wes Mitchell, Ted Reutzel |
| On-Site Speaker (Planned) |
Hunter Rauch |
| Abstract Scope |
Flux-core wire arc additive manufacturing (FC-WAAM) is an effective means to build metal components at large scales without the need for cover gases, inert environments, or metal powders, which makes it uniquely appealing for widespread use. In FC-WAAM, the flux is a sacrificial component that attempts to protect the deposited material from oxidation, nitridation, etc. Here, we present early results of a study on 316L stainless steel flux-core welding wire depositions using a commercially available wire. Through chemical and microstructural analysis coupled with mechanical and corrosion testing, we show that as-deposited material can perform well, but is in a sensitized state that requires post-deposition heat treatments to achieve good corrosion resistance. We identify critical differences between 316L stainless steel in the wrought and FC-WAAM conditions, tie these differences to specific material parameters and processing history, and tune the processing parameters to modify the properties to suit various hypothetical end uses. |