| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Beyond the Beam II
|
| Presentation Title |
Complex Material Deformation and Flow Phenomena during Additive Friction Stir Deposition of Dissimilar Aluminum Alloys |
| Author(s) |
Mackenzie E.J. Perry, Hunter Rauch, Robert J Griffiths, Jennifer Sietins, Yunhui Zhu, David Garcia, Hang Yu |
| On-Site Speaker (Planned) |
Mackenzie E.J. Perry |
| Abstract Scope |
Additive friction stir deposition (AFSD) is an innovative metal additive manufacturing technology based on high-temperature severe plastic deformation that enables solid-state deposition. By simultaneous rotation and compression of the feed material through a tool, large-scale parts are deposited with strong interface bonding, no detectable porosity, and an isotropic, fine grained microstructure. A fundamental understanding of the complex material deformation and flow phenomena during AFSD is essential to further optimize this process. In this work, experiments using hybrid feed-rods composed of tracers and matrix are used to explore the material flow within the deposition zone. X-ray computed tomography and electron backscatter diffraction show the complex 3-D shape of the deposited material and the microstructure evolution. Tracer cores show that the material flow path is dependent on placement within the feed-rod and processing parameters. The shape change between neighboring tracer segments reveals the first estimation of strain and strain rate in AFSD. |
| Proceedings Inclusion? |
Planned: |