| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
A Comparative Study of an Ambient and Underwater Graphite Free Repair of Aluminum Alloy 7050 by Additive Friction Stir Deposition |
| Author(s) |
Victor A. Rojas, Paul G. Allison, Brian Jordon |
| On-Site Speaker (Planned) |
Victor A. Rojas |
| Abstract Scope |
Additive Friction Stir Deposition (AFSD) is a novel solid state additive manufacturing process that can deposit material below solvus temperatures which is ideal for restoring damaged precipitate strengthen alloys that are prone to deleterious effects from high thermal inputs. However, the thermal history can promote precipitate coarsening causing a strength reduction on the original T7 substrate. A linear machined groove that represented simulated damage on AA7050-T7651 plates was additively restored via the AFSD process under two atmospheric conditions: ambient and underwater, which is a form of passive cooling. In this presentation, we discuss the differences in volumetric defects observed in both atmospheric conditions. Additionally, we discuss differences in microstructure and hardness measurements taken in the repair and the surrounding substrate. Tensile and fatigue mechanical behavior of each deposition condition were evaluated to quantify the weld efficiency in the as-deposited repair conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Process Technology, Other |