About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
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Presentation Title |
Solidification Mapping of Refractory Alloys during Additive Manufacturing |
Author(s) |
Megan D. Le Corre, Jonah Klemm-Toole, Kester Clarke, Amy Clarke |
On-Site Speaker (Planned) |
Megan D. Le Corre |
Abstract Scope |
Additive manufacturing for the production of ultra-high temperature refractory alloys promises to circumvent fabrication challenges associated with traditional manufacturing processes like thermomechanical processing. Given the lack of solidification data for refractory alloys, significant opportunity exists to develop fundamental processing-microstructure relationships for traditional and new refractory multi-principal element alloys (RMPEAs). Here we develop microstructure and solidification maps, whereby solidification velocities and thermal gradients are correlated to laser power, scan speed, and spot size, and microstructure characteristics like morphology and microsegregation. Models used include the Ivantsov Marginal Stability model and the Gaümann modification to the Hunt columnar to equiaxed transition model. Melt pool thermal gradients and solidification velocities were determined using heat transfer models such as Rosenthal model. The solidification maps developed in this work have the potential to accelerate industry adoption and implementation of these alloys. MURI and AUSMURI Collaborative Research. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Characterization |