| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Additively Manufactured Materials
|
| Presentation Title |
Effect of Microstructure Evolution on Hot Corrosion Resistance of P91&304 Graded Composition Transition Joint |
| Author(s) |
Ting Sun, Yuying Wen, Shanshan Hu, Zhili Feng, Haiyang Qian, Xingru Tan, Xingbo Liu |
| On-Site Speaker (Planned) |
Ting Sun |
| Abstract Scope |
A novel Graded Composition Transition Joint (GCTJ) consisting of P91 and 304, designed for superior creep performance, has been developed using advanced manufacturing techniques. Despite these advancements, the application of GCTJs in environments with deposited salts and elevated temperatures is impeded by corrosion at the dissimilar interface between P91 and 304. This study investigates the depth of interfacial degradation of thermally aged GCTJs under sulfate salts, alongside their pristine microstructure, using Optical Microscopy (OM), Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDS), and Electron Backscatter Diffraction (EBSD). The findings elucidate the influence of microstructural changes during thermal service on the interfacial corrosion resistance of GCTJs, thereby providing a foundational framework for the future design and comprehensive evaluation of advanced manufactured joints. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Environmental Effects, Additive Manufacturing |