| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Fatigue and Fracture III
|
| Presentation Title |
Fatigue Behavior of Aluminum Alloys Fabricated by Solid-state Additive Manufacturing |
| Author(s) |
J. Brian Jordon, Paul G Allison, Dustin Avery, Ben Rutherford |
| On-Site Speaker (Planned) |
J. Brian Jordon |
| Abstract Scope |
Additive manufacturing is generally associated with powder-based beam melting or sintering methods. However, recent innovations in solid-state additive methods such as additive friction stir deposition (AFS-Deposition) provide unique capabilities to additively repair or fabricate new components. The AFS-Deposition process is a novel method that exploits high-shear and severe plastic deformation to produce fully-dense, near net-shape structures. To produce additive components by the AFS-Deposition process, feedstock material is deposited through a hollow rotating tool that generates frictional heat and hydrostatic pressures, which results in solid-state metallurgical bonding. While the feasibility of the AFS-Deposition process has been demonstrated on various materials, the fatigue performance of this new manufacturing process remains largely unknown. As such, the investigation of the fatigue behavior of 6xxx and 7xxx aluminum alloys fabricated from the AFS-Deposition process is presented. In particular, fatigue crack nucleation and crack propagation mechanisms associated with the AFS-Deposition process are discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |