| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
Microstructure and Mechanical Property of Gas Tungsten Arc and Friction Stir Welds of L12 Precipitate FCC High-entropy Alloy |
| Author(s) |
Po-Ying Hsieh, Chih-Hsien Liao, Hung-Chih Liu, Po-Ting Lin, Pai-Keng Shen, Shao-Wei Hunag, Yutaka S. Sato, Che-Wei Tsai |
| On-Site Speaker (Planned) |
Chih-Hsien Liao |
| Abstract Scope |
The welding technology is significant in the application of HEAs in the industry. In this study, we discussed the mechanical properties and microstructure of Al0.2Co1.5CrFeNi1.5Ti0.3 after welding by gas tungsten arc (GTA) welding and friction stir welding (FSW), respectively. First, GTA welding of precipitated HEAs resulted in formation of the dendrites in fusion zone, and the hardness and the tensile strength of the GTA weld decreased to 68% and 51% of those of the base metal, respectively. However, FSW exhibited the excellent mechanical properties, which were still over 94% of hardness value and tensile strength of the base metal. The microstructure was characterized by discontinuous dynamic recrystallization and the grain refinement effect in the stir zone. After tensile test with digital image correlation, the GTA weld had the low strength with nonuniform deformation in the fusion zone, while FS weld showed the high strength with uniform deformation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Joining, Mechanical Properties |