| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Microstructural evolution and phase transformations in Al-Cu Friction Stir Welding |
| Author(s) |
Michael Lastovich, Bharat Gwalani |
| On-Site Speaker (Planned) |
Michael Lastovich |
| Abstract Scope |
Dissimilar joining of Al and Cu by friction stir welding is being adopted over traditional fusion approaches due to the reduced reactivity and absence of solidification defects. With much of the current literature focused on improving the morphology and properties of the weld zone, there has been less investigation into the interplay between the deformation experienced by the processed metals and its influence on the reactivity and local phase stability within the weld microstructure. In the present study, alloys of 6061 Al and commercially pure Cu are friction stir welded together and a suite of characterization tools at multiple length scale are used to identify the impact of the high shear processing on local reactivity within the system. SEM and micron scale 3D serial sectioning shine light on variable characteristics of the bonded interfaces and the formation of cellular nanolaminates, with the formation of gradient intermetallics probed by 4D-STEM. |
| Proceedings Inclusion? |
Planned: |