| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Modified Friction Stir Welding of Al-Mg-Cu-Zn Aluminum Alloy |
| Author(s) |
Ahmad Alali Alkhalaf, Anna Tesleva, Pavel Polyakov, Matthias Moschinger, Sebastian Fritsche, Iuliia Morozova, Anton Naumov, Fedor Isupov, Gonçalo Pina Cipriano, Sergio T. Amancio-Filho |
| On-Site Speaker (Planned) |
Ahmad Alali Alkhalaf |
| Abstract Scope |
Friction Stir Welding (FSW) is adopted to join the Al-Mg-Cu-Zn (7xxx) aluminum alloys in order to improve strength and ductility of the joints. The paper presents an investigation to the effect of the modified FSW methods such as Impulse FSW (IFSW) and High-Speed FSW (HS-FSW) on the microstructure and mechanical properties of the AA7075 TXX aluminum alloy. It was demonstrated that the tensile properties and hardness of the IFSW joints could be improved compared to the traditional FSW joints by variation of the impulse parameters (force and frequency). This enhancement is caused by microstructural changing. The brittle fracture of the HS-FSW joints are explained by the presence of defects in the weld zone. It indicates that heat input was insufficient or intermixing in the stir zone was inadequate. In order to avoid defects, the stirring action is planned be improved with a threaded tool or further adoption of the parameters. |
| Proceedings Inclusion? |
Planned: |