| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments II
|
| Presentation Title |
Wire-Arc Additive Manufacturing of Haynes 282 Superalloy with Designed Precipitation Strengthening for High Performance at Elevated Temperatures |
| Author(s) |
Luis Fernando Ladinos Pizano, Xin Wang, Soumya Sridar, Chantal K. Sudbrack, Wei Xiong |
| On-Site Speaker (Planned) |
Wei Xiong |
| Abstract Scope |
Haynes 282 alloy is widely used in structural components due to its reliable high-temperature performance (approximately 700°C). Effective manufacturing and repair methods for Haynes 282 components are crucial. Wire-Arc Additive Manufacturing (WAAM) is a suitable technique for large-scale metallic component printing. This study demonstrates the feasibility of using WAAM to print large samples of Haynes 282, including cone-shaped geometries for power plant components. Leveraging our understanding of process-structure-property relationships, CALPHAD-based Integrated Computational Materials Engineering (ICME) tools enhanced by Machine Learning, and high-throughput experiments, we designed a post-heat treatment process that reduced anisotropic microstructure-property correlations. Precipitation strengthening effects were optimized for the large WAAM samples. Comparing with traditionally manufactured Haynes 282 samples, WAAM showed excellent creep resistance at high temperatures and high yield strength at room temperature. WAAM proves applicable for large component fabrication and repair, offering outstanding performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, ICME |