About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing Fatigue and Fracture: Effects of Surface Roughness, Residual Stress, and Environment
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Presentation Title |
Fatigue Behavior of Fastener Holes in High-strength Aluminum Plates Repaired by Additive Friction Stir Deposition |
Author(s) |
Ismael Y. Hidalgo, Paul Allison, Brian Jordon, Malcolm Williams, Jacob Williamson, Jacob Strain |
On-Site Speaker (Planned) |
Ismael Y. Hidalgo |
Abstract Scope |
This present study will characterize the potential for solid-state additive manufacturing techniques, namely additive friction stir deposition (AFSD), in repairing high-strength aluminum alloy 7050. This study uses a blended-out center hole geometry to simulate mechanically or corrosively damaged material that commonly occurs around fastener holes. The microstructure of the repaired specimen will be characterized to evaluate the repair interface and the effect of heat input during processing on the substrate material. Monotonic and fatigue properties will be evaluated for repaired and unrepaired specimen to quantify the structural performance of the repairs. Post-testing fractography will elucidate the failure mechanisms from both cyclic and overload testing to allow for an understanding on the weaknesses and strengths of each process in repairing of AA7050. As such, this study will demonstrate the potential for solid-state manufacturing to return damaged components back to service. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Aluminum, Other |