About this Abstract |
Meeting |
6th International Congress on 3D Materials Science (3DMS 2022)
|
Symposium
|
6th International Congress on 3D Materials Science (3DMS 2022)
|
Presentation Title |
Investigation of Grain Boundary Precipitation in Titanium Alloys using 3D FIB/SEM Tomography and 3D Phase Field Simulation |
Author(s) |
Dian Li, Rongpei Shi, Yufeng Zheng |
On-Site Speaker (Planned) |
Yufeng Zheng |
Abstract Scope |
The mechanical performance of titanium alloys can be optimized by tuning the hcp structured alpha precipitates in a matrix of bcc structured beta phase. Our previous study in Ti-5Al-5Mo-5V-3Cr (wt%, Ti-5553) has shown that fine-scale alpha precipitates can nucleate from the pre-formed omega/beta interface. In this work, the grain boundary alpha precipitates in the Ti-5553 alloy were investigated using 3D FIB/SEM tomography and 3D phase field simulations. The 3D morphology of grain boundary alpha precipitates was characterized by the FIB serial sectioning using Thermo Scientific Scios 2 FIB/SEM and reconstructed using the MIPAP image analysis software. The nucleation and growth of grain boundary alpha precipitates was simulated using 3D phase field simulation. The influence of the inclination angle between the habit plane of the selected variant for grain boundary alpha and the hosting grain boundary plane in determining the morphology of grain boundary precipitates in titanium alloys will be introduced. |
Proceedings Inclusion? |
Definite: Other |