| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Manipulation of Defect Structures and Hierarchical Microstructures
|
| Presentation Title |
Role of Cold Sprayed Microstructure on Tensile and Fatigue Behavior for AA7075 |
| Author(s) |
Christopher Jacob Williamson, Ning Zhu, Arthur Webb, Brian Jordon, Luke Brewer |
| On-Site Speaker (Planned) |
Christopher Jacob Williamson |
| Abstract Scope |
This paper will compare and contrast the microstructure-property relationships for cold sprayed and wrought (T6) AA7075 material. Cold spray deposition is a solid state, powder-based additive processing approach that uses supersonic particle impingement to build up the material into complex geometries. The cold sprayed microstructure is fundamentally bimodal in grain size and has an inhomogeneous nanophase distribution. Cold sprayed materials were produced using three different feedstock powders with intentional differences in the precipitate distribution: as-atomized, solutionized, and overaged. After deposition, the tensile behavior between these three materials is markedly different with as-atomized material being the strongest but least ductile, while overaged material is the weakest but most ductile. The stress-cycle fatigue behavior of these materials shows that is it not the strength of the material that controls their life, but instead our data strongly suggests that it is the role of intermetallic networks that is central to fatigue performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |