| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Direct Powder Combination, Consolidation, and Forming of Metals and Composites via Solid-state Additive Manufacturing |
| Author(s) |
Robert J. Griffiths, Hunter Rauch, Hang Yu |
| On-Site Speaker (Planned) |
Robert J. Griffiths |
| Abstract Scope |
Additive friction stir deposition (AFSD) is a solid-state additive manufacturing technique capable of processing a wide range of metal systems. In one configuration of the technology, powder material is fed through a hollow tool via a differentially rotating auger screw, much like many pellet-fed polymer extruders. Unlike these, at the end of the tool the accumulated powder is further consolidated via severe shear deformation which also bonds the material to a substrate or previous layer. By feeding different types of powder into the process, full density composites and alloys can be formed in-situ, with the additive nature of the technique producing desired shapes and structures as well. Here we focus on an Aluminum-Molybdenum system produced via this technique. The thermomechanical conditions during AFSD are ideal for mechanically induced mixing, producing a unique hybrid composite structure with extremely high loading fraction of reinforcement, full density, and good mechanical response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Composites |