About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Influence of Laser Welding on Deformation-Induced Phase Transformation in AISI 304 SS |
| Author(s) |
Matthew J. Swenson, Timothy John Tilton, Laurie Delenin, Elizabeth Getto |
| On-Site Speaker (Planned) |
Matthew J. Swenson |
| Abstract Scope |
Laser welding of 304 stainless steel and other metals has increased in prominence due to the ease of integration in automated manufacturing, and because it requires less energy applied to the workpiece. Such welds can often produce more precise and consistent weld joints than other conventional processes. The objective of this study is to investigate the effects of laser welding on the microstructure and mechanical properties of a commercial 304 SS alloy. In this study, laser welding of 304 SS samples (butt-welded) results in a ~40% increase in ductility, without any loss in tensile strength. The welding process appears to influence the deformation-induced phase transformation mechanisms within the material, limiting the formation of martensite. The ductility increase is attributed to suppression of strain-induced twinning, likely due to disparate grains sizes between the fusion zone and the parent bulk material. Reduced twinning thus limits subsequent α’ formation at higher elongations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Characterization, Phase Transformations |