| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
C-16: Effect of Low-temperature Long-term Aging on the Mechanical Properties of Age-hardenable Aluminum Alloys |
| Author(s) |
Philip Aster, Phillip Dumitraschkewitz, Florian Schmid, Katharina Strobel, Peter Uggowitzer, Stefan Pogatscher |
| On-Site Speaker (Planned) |
Philip Aster |
| Abstract Scope |
Cluster hardening, i.e. the formation of clusters instead of classical metastable hardening phases, depicts a promising approach for strengthening with a reduced loss of ductility in aluminum alloys. In this context, the effect of an unusual long aging time on the mechanical properties and forming behavior of Al-Mg-Si-Cu alloys (6xxx series) and novel Al-Mg-Zn-Cu alloys (crossover alloys) is investigated. Aging is performed at temperatures which promote the formation of clusters instead of typically larger, metastable hardening phases. The cluster-hardened alloys exhibit pronounced strain hardening properties, which we were able to assess by structural analysis using atom probe tomography (APT). In addition, the hardening characteristics were investigated with tensile tests. The results show a good aging response in combination with improved forming parameters such as uniform elongation and strain hardening compared to a conventional aging regime. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Phase Transformations, Characterization |