| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
|
| Presentation Title |
Process and Properties Relationships of Solidification in Solid-Solution Ni-Based Superalloys Fabricated via Laser Powder Bed Fusion |
| Author(s) |
Amanda Heimbrook |
| On-Site Speaker (Planned) |
Amanda Heimbrook |
| Abstract Scope |
Additively manufacturing superalloys via laser powder bed fusion (LPBF) offers effective and precise fabrication of intricate geometries for nuclear applications. Solid solution strengthened (SSS) nickel-based alloys are of interest due to their corrosion resistance and superior performance at both high temperatures and when exposed to energetic particles. A central composite design of experiments is applied as this study explores the processing-properties relationships of three different SSS alloys (IN625, IN617, and Ni230) with similar LPBF processing parameters. To understand the thermodynamics and phase behavior during processing, defect mapping, calculation of phase diagrams (CALPHAD) modeling, and electron microscopy are utilized. These combined techniques can validate any secondary phases and reveal fundamental mechanisms influencing microstructural evolution during fabrication. Moreover, tensile mechanical properties are evaluated. The three SSS alloys showcased distinct trends in defect formation and microstructure, addressing the need to uncover underlying processing factors impacting the materials characteristics and consequently properties and performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Solidification |