| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XII
|
| Presentation Title |
The Effect of Additional Impulses on Microstructure and Mechanical Performance of Impulse Friction Stir Welded AA7075-T6 Joints |
| Author(s) |
Keqi Wang, Svetlana Shalnova, Anton Naumov, Olga Klimova, Fedor Isupov, Ahmad Alali Alkhalaf |
| On-Site Speaker (Planned) |
Keqi Wang |
| Abstract Scope |
Electron backscatter diffraction (EBSD) was used to study the microstructure characteristics of different regions in 7075-T6 aluminum alloy (AlZnMgCu1.5) joint by impluse friction stir welding and conventional friction stir welding. According to the EBSD results, combined with the precipitation behavior and mechanical properties of the welded joints the effect of impulses was investigated for AA7075-T6 joints. By means of IFSW a fine-grained equiaxed microstructure in the Stir zone (SZ), the fraction of the low-angle grain boundaries (LAGBs) and high-angle grain boundaries (HAGBs) distribution for the SZ and Heat-Affected zone (HAZ) of the studied joints are obtained, the transformation of the LAGBs into HAGBs occurred more effectively under impulses influence. Higher mechanical performance of the joints produced by IFSW could be related to the grain refinement and the transformation of the grain orientation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Characterization, Joining |