| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
From Rotational to Translational and Interlocking Particle Rearrangement: Exploring Binder Jet Printing of Controlled Irregular-Shaped and Fully-Dense Copper Powder |
| Author(s) |
Mahsa Beyk Khorasani, Markus Chmielus, John Barnes |
| On-Site Speaker (Planned) |
Mahsa Beyk Khorasani |
| Abstract Scope |
In additive manufacturing of metallic components, spherical gas-atomized powder is preferred due to its higher packing fraction, resulting in higher green and sintered densities.
During BJP, a roller passes over the powder bed to flatten the surface. This movement changes particle arrangements within the build box. In spherical powder, it mainly causes particle rotation with slight rearrangement. In irregular-shaped powder, the roller's movement distorts the bed, and increases the packing through interlocking which significantly improves green and sintered densities.
BJP of a novel copper powder with controlled irregular-shaped and fully dense particles showed that the green density is close to its tap density, whereas the green density of the gas-atomized powder is typically equal to or less than its apparent density. This presentation will set this new powder in perspective to traditional powders and challenge the common perception that powders with spherical particles are always superior for BJP. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Other |