| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
C-24: Phase Transformation Upon Dissimilar Laser Welding of Al5083 and SS304 |
| Author(s) |
Parth Nitinkumar Vaidya, Amber Shrivastava |
| On-Site Speaker (Planned) |
Parth Nitinkumar Vaidya |
| Abstract Scope |
Joining dissimilar metals is desirable for light-weighting applications in many industries. The brittle intermetallic compounds present in the dissimilar joints of aluminum alloys and stainless steel affect the joint mechanical properties adversely. To improve the dissimilar joint properties, phases including intermetallics in the joints must be identified. Dissimilar joints of Al5083 and SS304 were fabricated with different laser power, ranging from 1 kW to 2 kW. These joints were subjected to characterization for phase identification and tensile testing. Further, transient temperature distribution during dissimilar welding and corresponding phase transformations are predicted from simulations. At the dissimilar interface, the first phase Fe2Al5 is experimentally observed from the aluminum-steel chemical reaction and simulations also predicts the lowest Gibbs free energy for Fe2Al5. The Fe-Al intermetallic layer thickness varies from 1.8 μm to 4 μm across the dissimilar joints. The joints’ tensile strength and ductility are discussed with respect to the observed microstructure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, |