| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solid-state Processing and Manufacturing for Extreme Environment Applications: Integrating Insights and Innovations
|
| Presentation Title |
Laser welding effects on microstructure and mechanical properties on oxide dispersion strengthened steel MA956 |
| Author(s) |
Ryan Charles Sundburg, Elizabeth Getto, Brad Baker, Matthew Swenson |
| On-Site Speaker (Planned) |
Ryan Charles Sundburg |
| Abstract Scope |
Oxide dispersion strengthened (ODS) steels are leading candidates for structural components in advanced nuclear reactors, but reliable and repeatable processes for fabrication and joining of components made with these advanced alloys has not yet been established. Laser welding is a promising candidate for joining ODS steels due to its small length scales and fast cooling rates, limiting the impact of joining on the microstructure and mechanical properties of the alloys and potentially maintaining their irradiation resistance. In this study, the microstructure and mechanical properties of laser welded MA956 are investigated using nanoindentation, scanning transmission electron microscopy, electron backscatter diffraction, and atom probe tomography. Nanocluster and dispersoid morphologies are observed between the base material and the joined region. Mechanical properties are also measured, and analysis relating the resulting microstructures to changes in yield strength is used to provide a better understanding of the potential benefits and disadvantages of laser welding MA956. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Joining, Mechanical Properties |