| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XII
|
| Presentation Title |
The Role of Fracture Properties on Lap Joint Strength of Friction Stir Welded AA 7055-T6 Sheets |
| Author(s) |
Kranthi Balusu, Hrishikesh Das, Xiao Li, Timothy Roosendaal, Robert Seffens, Ayoub Soulami, Piyush Upadhyay |
| On-Site Speaker (Planned) |
Kranthi Balusu |
| Abstract Scope |
Friction stir lap welded (FSLW) joints have weight-saving potential in Aluminum intensive automotive assembly. However, FSLW also modifies the microstructure close to the joint. Optimizing the FSLW process requires understanding the relationship between the strength and the joint’s microstructure. In previous studies, efforts have been dedicated to determining the effects of local softening, the shape of the oxide line, and porosity. However, the impact of changes to the fracture properties on the joint’s strength has not been studied.
In this work, strength testing, and simulations, aided by microstructural characterization, were used to determine the role of fracture properties on the shear strength of a 3-sheet (alloys 7055-7055-6011) lap joint. Characterization involved testing for fracture properties and hardness within different regions of the weld. This data was then implemented into finite element simulations. As a result, the joint strength was predicted with a deviation less than 10% from the experimental value. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Computational Materials Science & Engineering |