| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XI
|
| Presentation Title |
Friction Stir Lap Welding between Al and FeCoCrNiMn High Entropy Alloy |
| Author(s) |
Haining Yao, Ke Chen, Muyang Jiang, Min Wang, Xueming Hua, Lanting Zhang, Aidang Shan |
| On-Site Speaker (Planned) |
Ke Chen |
| Abstract Scope |
Friction stir lap welding between single-phase FeCoCrNiMn high entropy alloy (HEA) and commercial pure aluminum (AA1060) was studied. Sound joints were produced at a traverse speed of 50mm/min and a rotation speed of 1500RPM. The tensile shear strength reached ~240N/mm. The joint fractured at Al base material, showing a high interfacial bonding. The interfacial microstructure was carefully characterized. A transition layer of ~2μm thick was observed at the interface, which is mainly of Al-rich FCC crystal structure rather than intermetallic compound (IMC). Elemental distribution is not homogeneous, with Cr and Mn locally depleted where also shows a change in crystal structure. To the aluminum side nearby the transition layer, there shows a particle-embedded composite layer. Different from brittle IMC formation in welding of dissimilar metals, the transition layer here shares the same FCC crystal structure with both base materials, which is possibly the key for the high interfacial bonding. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Aluminum, Joining |