| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
|
| Presentation Title |
Accelerated Corrosion Behavior of Cold Spray Deposited AA2024 and AA7075 and Implications for Mechanical Performance |
| Author(s) |
Gregory W. Kubacki, Ozymandias Agar, Munsu Kim, Sheri Stanke, Christine E Sanders, Rachel Black, Sean Kane, Luke N Brewer |
| On-Site Speaker (Planned) |
Gregory W. Kubacki |
| Abstract Scope |
This presentation will focus on the environmental performance of cold-gas dynamic spray (cold spray) deposited aerospace aluminum alloys in simulated repair geometries. Cold spray is a promising solid-state technology for additively manufactured repairs to a range of material systems. We will cover the results of laboratory and outdoor, accelerated exposure testing that compares the atmospheric corrosion behavior of cold spray deposited AA2024 and AA7075 to their wrought counterparts. Testing to this point has shown that atmospheric corrosion behavior depends on spray quality and defect density, with idealized, robotically deposited flat-on-plate samples performing equivalently to the substrate, wrought, material. Defects in simulated repair depositions performed by hand resulted in poor conversion coating efficiency at those points, resulting in accelerated localized attack that may serve as crack initiators. Additional testing to investigate corrosion progression at the deposit-substrate boundary and its effect on mechanical stability of the repair will also be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, Mechanical Properties |