About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
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Advances in Metal Matrix Composites: Processing, Additive Manufacturing, and Applications
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| Presentation Title |
Comminution-Derived Ti-WC Metal Matrix Composite Powder Feedstocks and Cold Spray Deposition |
| Author(s) |
Finn Day, Sam Boese, Aidan Sevinsky, Ozan Ozdemir, Ethan Lazar, Jacob Fleck, Andrew Neils |
| On-Site Speaker (Planned) |
Andrew Neils |
| Abstract Scope |
Metal matrix composite (MMC) feedstock powders for additive manufacturing (AM) are typically produced by deliberately blending or mechanically alloying separate matrix and reinforcement materials. This work evaluates cold spray deposition of an MMC feedstock derived from mechanically recycled titanium machining scrap. A multi-stage ball milling approach is presented, using sequentially smaller grinding media to shape the scrap-derived particles into a cold-spray-relevant particle size distribution and morphology. As the cemented carbide milling vial wears, it introduces tungsten carbide (WC) dispersoids into the titanium matrix, resulting in a well-dispersed composite. Cold spray coatings produced from the composite feedstock were compared to both gas-atomized and cold, mechanically derived commercially available powders, and were evaluated via microhardness and pull-off adhesion testing. The WC distribution and coating microstructure was characterized using scanning electron microscopy and X-ray diffraction. Results demonstrate that milling vial wear can be leveraged for producing MMC feedstocks from machining scrap. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Sustainability |