| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
C-15: Effect of Interlayer Towards the Joint Properties Enhancement of Dissimilar Friction Welded SS321-AA2219 |
| Author(s) |
Neeraj Kumar Mishra, SGK Manikandan, Neethu N, C. Jebasihamony, Amber Shrivastava |
| On-Site Speaker (Planned) |
Neeraj Kumar Mishra |
| Abstract Scope |
Rotary friction welding is a promising technique for joining cylindrical components of dissimilar materials. This study experimentally investigates the performance of rotary friction welded SS321-AA2219 joints, with and without AA6063 interlayer. The evolution of force and temperature during the process is studied and its effect on microstructure and mechanical properties is observed. Placing an interlayer between SS321 and AA2219, affects the force and temperature evolution during the process. By using AA6063 as an interlayer, both force and temperature during the process increased. Electron back scattered diffraction results showed the fine grains towards the AA2219 side. The strain free AA2219 grains near the interface suggest dynamic recrystallization from plastic deformation. On the SS321 side of the joint interface, the presence of strained and deformed grains is indicated by the high LAGB fraction (77.2 % for without interlayer and ~80% for with interlayer). The phase identification from EBSD phase map revealed the presence of Al2Fe and Al13Fe4 intermetallics in the joints made without interlayer. Beside Al2Fe and Al13Fe4, AlFe, Fe7Al11 and Al5Fe2 were also noticed the joint made without interlayer. The strength of joint made with interlayer was 227.4±7.4 MPa, which was ~40% higher than the joints made with interlayer. Joint efficiency was 56.7% with respect to AA2219 base material. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Phase Transformations, Characterization |