| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Fatigue and Interfacial Fracture Behavior of Cold Spray Deposited Material for Additive Repair |
| Author(s) |
Luke N. Brewer, William A. Story, Benjamin C. White, J B Jordon |
| On-Site Speaker (Planned) |
Luke N. Brewer |
| Abstract Scope |
This presentation will discuss the use of cold spray deposition for solid state structural repair of high strength aluminum alloy structures. High strength aluminum alloys, such as AA7075 and AA2024, are not readily repaired by fusion-based welding. High quality aluminum alloy material can be deposited by cold spray in relatively large volumes, but the key mechanical properties must be assessed and optimized for use in structural repairs. In particular, adhesion and fatigue response are critical for structural repair of aerospace structures. We will present a new method for measuring interfacial fracture toughness of cold spray deposited AA7075 material. This method shows the impact of substrate preparation and residual stress on the interfacial fracture toughness. In addition, we will present results on the fatigue behavior of cold sprayed material, both as free-standing and in the repair of fastener holes. The interplay between fretting fatigue damage and crack propagation will be discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |