| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
Prismatic Slip Induced Interface Sliding in Alpha/Beta Titanium Alloys |
| Author(s) |
Zachary T. Kloenne, Stoichko Antonov, Gopal Viswanathan , Michael Loretto, Hamish Fraser |
| On-Site Speaker (Planned) |
Zachary T. Kloenne |
| Abstract Scope |
Titanium and its alloys have shown to deform through a combination of dislocation slip and deformation twinning. Grain boundary sliding has also been reported to contribute to the plasticity of CP titanium and Ti-6Al-4V, though these results have been reported far less frequently. More recently, Ti-1Al-4V-0.25Si-0.25Fe-0.15O has been shown to deform through sliding at the alpha/beta interface. Whilst interface sliding appears to be a slip-stimulated event, significant strain gradients were observed in response, thus speculating the presence of GNDs. The nature of these dislocations were studied using a split dislocation density analysis by HR-EBSD. Absolute character of the dislocations involved were confirmed by trace analysis in the TEM. Additionally, the sequence of events, and associated plastic strain, were studied via in-situ straining in the SEM coupled with HRDIC. Interestingly, APT results showed a Si enrichment at the alpha/beta interface. The effect of Si on sliding was studied further. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Characterization, Mechanical Properties |