| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
|
| Presentation Title |
Mechanical Behaviour of Additively Manufactured Al-Alloys: Impact of Post-processing |
| Author(s) |
Moataz M. Attallah |
| On-Site Speaker (Planned) |
Moataz M. Attallah |
| Abstract Scope |
Additively Manufactured Al-Alloys are prone to the formation of gas porosity and oxide films. In addition, other process-induced defects (e.g. lack of fusion and keyholing) can further deteriorate the mechanical performance. A combination of heat treatment and hot isostatic pressing is usually required to improve the mechanical behaviour (tensile and fatigue properties). Nonetheless, the use of heat treatment usually results in grain coarsening, combined with the removal of the as-fabricated dislocation structure. The repeated high-temperature treatments can be counterproductive, as they may lead to the growth of the entrapped gas pores, resulting in a poorer mechanical behaviour than the as-fabricated structure. A full overview of the factors affecting the mechanical behaviour of AMed Al-alloys will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |