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Meeting MS&T25: Materials Science & Technology
Symposium Additive Manufacturing: Development of Powders
Presentation Title A Table-Top Gas Atomizer for Rapid Development of Novel Alloys
Author(s) Andrew Seltzman, Andrei-Alexandru Popa, Mariabelle Azemar, Mia Chen, Kyle Williams
On-Site Speaker (Planned) Andrew Seltzman
Abstract Scope A tabletop Gas Atomization (GA) and Cold-Spray (CS) system rapidly produced 0.05-0.1g batches for rapid tuning of alloys and GA parameters. A tube furnace alloyed low-solubility elemental mixtures in-situ up to 2500°C. An AMed resin nozzle array produced 10-100 µm powder diameters in a supersonic argon flow that cooled at ~1x105 K/s with a square-cube law sweep of cooling-rate vs diameter. Modified L-PBF printed AMed samples from 100mg powder quantities. Focused Ion Beam (FIB) sectioning of powder and L-PBF samples showed TiCr2, TaCr2, or TaV2 Laves phase precipitates in copper alloys were refined during L-PBF even below 400W. CS of powders onto adjacent strips on a target coupon for ion irradiation simultaneously evaluates several alloys for future use in a fusion reactor environment, where powder diameter controlled precipitate size, adjacent strips select alloy, and ion damage gradient along strip length controls simulated neutron damage. Supported by US-DOE DE-SC0014264.

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A Table-Top Gas Atomizer for Rapid Development of Novel Alloys
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