About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Investigating Microstructure and Gas-Atomization Processability of Novel Mo-Si-B-(Cr, Al) Alloys |
Author(s) |
Haozhi Zhang, Victoria Himelstein, Ben Labiner, Saket Thapliyal, Patxi Fernandez-Zelaia, Christopher Ledford, Michael Kirka, Tim Horn |
On-Site Speaker (Planned) |
Haozhi Zhang |
Abstract Scope |
High-temperature applications demand materials that can endure extreme thermal and mechanical stresses to elevate the thermal conversion efficiency. Molybdenum and its alloys offer excellent strength, high thermal conductivity, and great creep resistance at elevated temperatures, but are limited by volatile oxide formation at a relatively low temperature. Molybdenum-silicon-boron (MoSiB) alloys have emerged as a promising candidate due to their improved oxidation and creep resistance, benefiting from the synergic effect of silicide and boride protection films. In this study, three MoSiB-based alloys were designed with chromium and aluminum additions to further enhance oxidation resistance and mechanical performance. These novel alloys were produced via arc casting to achieve the target compositions and then gas-atomized into powders for the subsequent additive manufacturing. The microstructural, compositional, and phase characterizations across each step were conducted to shed light on the processability of these novel Mo-Si-B-(Cr, Al) alloys. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |