| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Hydrogen Embrittlement Behavior of an Additive Friction Stir Deposition Processed aa7075 Aluminum Alloy |
| Author(s) |
Ebenezer Acquah, Nilesh Kumar |
| On-Site Speaker (Planned) |
Ebenezer Acquah |
| Abstract Scope |
Additive friction stir deposition (AFSD) is a solid-state metal additive manufacturing process that has the potential to enhance the mechanical properties of metallic materials. This study examines the hydrogen embrittlement susceptibility of AA7075 aluminum alloy processed via AFSD. Hydrogen charging was conducted by cathodic pre-charging dog-bone-shaped tensile test specimens for 24 hours at -1.4 V in a 3.5 wt.% NaCl solution at room temperature. Quasi-static tensile testing of hydrogen-charged specimens was performed at various strain rates at room temperature. For comparison, the AA7075-T6 alloy, used as AFSD feedstock, underwent a hydrogen embrittlement study under similar conditions. Advanced microstructural characterization tools were used for fractography and microstructural analysis. The comparative study with the feedstock demonstrated the effect of AFSD on hydrogen embrittlement and provided valuable insights into the role of AFSD processing in mitigating hydrogen embrittlement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Environmental Effects |