| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Titanium-based Materials: Processing, Microstructure and Material Properties
|
| Presentation Title |
Atomic Layer Deposition (ALD) for Improved Ti64 Feedstocks for Laser Powder Bed Fusion Processes |
| Author(s) |
Chris Gump, Joseph Gauspohl, Brandon Castro, Anthony Manerbino, Jeremy Iten |
| On-Site Speaker (Planned) |
Chris Gump |
| Abstract Scope |
Forge Nano (FN) coated Ti64 AM feedstock with Al2O3 using atomic layer deposition (ALD). ALD utilizes sequential, self-limiting surface reactions to deposit continuous, conformal films on surfaces with sub-nanometer thickness control. In this work, the coating process was scaled from 200 g to 15 kg of Ti64, depositing 5 nm of Al2O3 film. As experimental controls, a physical mixture of Ti64 and 80-nm Al2O3 nanopowder and a batch of pristine Ti64 were also prepared. The coated material showed a reduction in Hall Flow time over the 2 controls. Elementum 3D printed cubes and bars from each material, and the mechanical properties of the as-built and HIPed parts were tested. The ALD-coated material had the highest density, yield stress, and UTS, while also having the lowest surface roughness. Effect on the Young’s Modulus was negligible. Further scaling for 100 – 500 kg batches and continuous production processes will be discussed. |