| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
The Effect of Aluminium in Titanium on Deformation Mechanisms |
| Author(s) |
Michael Preuss, Yunkun Xu , Joao Quinta da Fonseca |
| On-Site Speaker (Planned) |
Michael Preuss |
| Abstract Scope |
Many titanium alloys of engineering relevance have up to 6 wt.% Aluminium additions for the purpose of solid solution strengthening. The work presented here discusses the effect of Aluminium additions on twinning and strain localisation. Deformation modes in binary Ti-xAl alloys were studied extensively and quantified using in-situ loading experiments in combination with neutron diffraction, electron microscopy and high-resolution digital image correlation. The results demonstrate that twinning and levels of strain localisation change significantly between 2 wt.% and 4 wt.% Aluminium additions, i.e. at much lower Aluminium content than previously assumed. Identifying the root cause for such change at very low Aluminium content was extremely challenging but recent advances in detector technology for electron microscopy eventually enabled to provide evidence of early stages of short-range ordering (SRO) in Ti-4Al, which was not identified in Ti-2Al. This highlights that SRO might be far more common in engineering alloys than previously assumed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Mechanical Properties, |