| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Microstructural and Mechanical Long-term Stability of AM Materials
|
| Presentation Title |
Characterization of Build Parameters and Microstructure in Low Heat Input WA-DED of Ni-Based Superalloy Haynes 282 |
| Author(s) |
Benjamin Adam, Luis Fernando Ladinos Pizano, Rui Feng, Robert Turpin, Graham Tewksbury, Chantal Sudbrack, Wei Xiong |
| On-Site Speaker (Planned) |
Benjamin Adam |
| Abstract Scope |
Ni-based superalloy Haynes® 282® is targeted for applications in advanced power generation systems for its superior high temperature mechanical properties. Novel additive manufacturing techniques such as Wire-arc direct energy deposition offer attractive cost and materials savings through near-net shaping of large, complex components with high deposition rates. However, process-induced porosity may require additional thermal-mechanical treatment, such as Hot Isostatic Pressing, that can limit its deployment. Here, a low heat-input Gas Metal Arc Welding process was used to fabricate fully dense multibead blocks, exploring a large set of build parameters variations, with focus on travel speed and wire feed speed, following initial weld setup optimization. Using a combinatorial approach of electron microscopy and computer tomography, microstructural evolution was examined across length scales in as-deposited and heat-treated conditions. Results showed successful determination of a defect-free processing windows, and desired recrystallization after annealing and single step age for low heat input deposition process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |