| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Three Sheet Al Alloy Assembly for Automotive Application |
| Author(s) |
Piyush Upadhyay, Hrishikesh Das, Daniel Graff |
| On-Site Speaker (Planned) |
Piyush Upadhyay |
| Abstract Scope |
We present process development and characterization of 3 sheet friction stir lap welds (FSLW) in three aluminum alloys ( 7xxx, 5xxx, and 6xxx). Welding speed of 0.3-2.9m/min was used with pin length >5mm with the aim to reduce upturn hooking on the retreating side and avoid wormhole defect on the advancing side root. Joints were also made in KSII configuration to enable T peel and U peel testing. Several stitch patterns of welds were used to understand its effects on T peel and U peel performance. Hat section welds for 3 point bending and axial crush testing were also made and tested with promising results. Along the way, we have identified several challenges that require further investigations including flash management near the trim edge, weld quality with limited clamping, tool failures at speeds greater than 0.5m/min, and propensity of incipient melting for 7xxx stack-up. |
| Proceedings Inclusion? |
Planned: |