| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Alternative Processes (Beyond the Beam)
|
| Presentation Title |
Powder Casting: Producing Bulk Metal Components from Powder without Compaction |
| Author(s) |
James D. Paramore, Matthew K. Dunstan, Brady G. Butler |
| On-Site Speaker (Planned) |
James D. Paramore |
| Abstract Scope |
Many non-beam additive manufacturing (AM) processes can be used to create metal green parts for subsequent sintering. However, the green parts often have very low relative densities, complicating sintering. For example, extrusion-based AM processes have been adapted to produce green parts using a polymer binder. However, achieving suitable mechanical and rheological properties of the feedstock often requires metal powder fractions of 50 vol% or less. Additionally, unless relatively expensive powders with excellent flowability and packing characteristics are used, binder jetting also produces parts with poor green densities. In this talk, a process called “Powder Casting” will be discussed. This process was originally developed to produce nearly fully dense metal components from loose powder by using hydrogen-assisted sintering to significantly improve densification. Results from different alloy systems and the incorporation of this method into non-beam AM processes to improve densification and, therefore, mechanical properties will be presented. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |