About this Abstract |
Meeting |
5th International Congress on 3D Materials Science (3DMS 2021)
|
Symposium
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5th International Congress on 3D Materials Science (3DMS 2021)
|
Presentation Title |
From 4D Images to Grain Boundary Properties |
Author(s) |
Jin Zhang, Wolfgang Ludwig, Yubin Zhang, Hans Henrik B. Sørensen, David J. Rowenhorst, Akinori Yamana, Peter W. Voorhees, Henning F. Poulsen |
On-Site Speaker (Planned) |
Jin Zhang |
Abstract Scope |
We developed a rapid throughput method to measure grain boundary properties by comparing a time-resolved x-ray experiment of grain growth to phase-field simulations. Grain evolution in pure iron is determined in three-dimensions and as a function of time with diffraction contrast tomography. Using a time step from the experiment as initial condition, the simulated microstructure is compared with the experimental one at a later time step. An optimization algorithm is used to find the reduced grain boundary mobilities that yield the best match between the experiment and the simulation. Using the proposed method, 10,307 reduced mobilities of 1,619 boundaries are determined from a bulk polycrystalline material without measuring the local boundary curvatures and velocities. We find that in general there is no correlation of grain boundary mobility with boundary inclination or misorientation. |
Proceedings Inclusion? |
Definite: Other |