| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VI
|
| Presentation Title |
The Role of Nanosecond Laser-treated Surface in Enhancing Bonding Strength of Adhesively Bonded Aluminum Alloy 6061 Similar Joints |
| Author(s) |
Avik Samanta, Seunghyun Ko, Yongsoon Shin, Yao Qiao, Robert J Seffens, Daniel R Merkel, Khaled W Shahwan, Kevin L Simmons |
| On-Site Speaker (Planned) |
Avik Samanta |
| Abstract Scope |
This work proposes an approach to improve the interfacial bonding between aluminum alloy 6061 and thermoset adhesive using nanosecond laser-based surface ablation treatment. The results show that nanosecond laser ablation can significantly improve adhesively bonded AA6061 joints with 80% enhanced lap-shear strength compared to as-received ones. The enhancement attributed to the laser ablation-driven surface physicochemical modifications, including rough morphology, removal of surface contaminants, and newly-formed aluminum oxides and hydroxides. The lap-shear strength also increased as the overlap ratio between laser pulses increased. The coverage of the adhesive layer on the fracture surface was improved as the laser pattern overlap ratio increased. The fracture mode of as-received ones was an adhesive failure, and a cohesive failure was achieved for those joints with laser surface treatment. This study established nanosecond laser treatment as an effective surface modification method to enhance the fracture resistance of adhesively bonded metal-metal joints. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Joining, Surface Modification and Coatings |