| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
Friction Stir Welding of Haynes 282 Ni-Based Super Alloy by Using a Novel Hemispherical Tool |
| Author(s) |
Abhishek Sharma, Yoshiaki Morisada, Kohsaku Ushioda, Hidetoshi Fujii |
| On-Site Speaker (Planned) |
Abhishek Sharma |
| Abstract Scope |
Haynes 282 (H282) is a γ′-strengthened Ni-based superalloy utilized for high-temperature structural applications in gas and steam turbines of jet engines and advanced ultra-supercritical thermal power plants. The friction stir welding (FSW) of H282 alloy poses challenges due to the alloy's high-temperature strength, which causes tool failure resulting from elevated processing forces and temperatures. Consequently, this study proposes a novel hemispherical tool design (without shoulder) for the FSW of H282 alloy. The FSWed joint achieved a strength of ~ 880 MPa, compared to the base metal's strength of ~ 912 MPa, yielding a joint efficiency of ~ 97%. Additionally, the welds fractured in the base metal region, indicating an even higher strength of the fabricated joint. The proposed approach outperforms the previous study on the FSW of H282 alloy by offering a cheaper tool material and a relatively simple tool design. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Joining, Copper / Nickel / Cobalt |