About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Development of Powders
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| Presentation Title |
Microstructure Evolution, Mechanical Behavior, and Additive Manufacturing Processability of Novel Mo-Si-B Alloys |
| Author(s) |
Haozhi Zhang, Victoria Himelstein, Jenny Forrester, Sourabh Saptarshi, Saket Thapliyal, Patxi Fernandez-Zelaia, Christopher Ledford, Michael Kirka, Tim Horn |
| On-Site Speaker (Planned) |
Haozhi Zhang |
| Abstract Scope |
Molybdenum-silicon-boron (MoSiB) alloys show great potential for extreme-temperature applications due to their high strength, good thermal stability, excellent corrosion resistance, and enhanced oxidation resistance from protective silicide and boride films. However, the research regarding the powder production and additive manufacturing processability of novel Mo-Si-B-based alloys remains limited. In this work, three Mo-Si-B-based alloys were developed aiming to further improve the oxidation resistance and mechanical properties via alloying with Cr and Al. The novel alloys were produced by arc-casting, gas-atomized into powders, and subsequently consolidated into components via electron beam powder bed fusion additive manufacturing. The composition and phase evolution, through each processing step, were characterized to evaluate the processability of each alloy. The microhardness testing and oxygen uptake measurement were also conducted to assess the mechanical response and oxidation resistance of Mo-Si-B-(Cr, Al) alloys. |