| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
Wire-Arc Additive Manufacturing of HaynesŪ 282 Superalloy |
| Author(s) |
Wei Xiong, Luis Ladinos Pizano, Soumya Sridar, Chantal K. Sudbrack |
| On-Site Speaker (Planned) |
Wei Xiong |
| Abstract Scope |
Wire-Arc Additive manufacturing (WAAM) is a directed energy deposition technique suitable for large-scale metallic component printing and has potential for power plant components. Using GefertecŪ ARC 605, the feasibility of WAAM for large-scale printing of Haynes 282 superalloy is demonstrated with careful process optimization, resulting in high-quality builds in the wall and cone-shape geometries. The cyclic heating and cooling process introduced the complexity with residual stress and columnar grain structure and thus required further post-heat treatment optimization. Combining CALPHAD-based ICME tools and high-throughput experiments, an ad hoc post-heat treatment was designed to reduce anisotropy in microstructure-property correlations and optimize microstructure, yielding comparable strength to the alloys made by traditional processes. This work demonstrates that although the WAAM is ready for large component fabrication and repairing, appropriate design of heat treatment according to the process-structure-property relationships is critical. Moreover, the location-specific design should be considered to ensure the mechanical performance of the large-scale prints. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, ICME, Characterization |