About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithms Development in Materials Science and Engineering
|
Presentation Title |
Dislocation dynamics during deformation of metals: direct coupling between 3D experimental and 3D simulated movies |
Author(s) |
Sina Borgi, Henning Friis Poulsen, Grethe Winther |
On-Site Speaker (Planned) |
Sina Borgi |
Abstract Scope |
Dark-Field X-ray Microscopy, DFXM, is a novel experimental method for visualizing thousands of dislocations and domains, as well as their 3D strain fields, during processing of metals. Comprehensive, multiscale movies are generated of mm-sized specimens. We first present work to establish a digital twin of the sample and forward models for generation of virtual DFXM images. This is used for understanding the experimental results and for training a neural network to classify the individual dislocations observed according to their type. Next, we provide algorithms that allows to reconstruct the dislocation density field from DFXM data. This field can be directly interfaced to continuous dislocation dynamics (CDD) models. By coupling the digital twin, forwarding modelling and reconstruction software in a loop, we can fit parameters in the CDD model and validate their performance. This approach also extends the applicability of CDD to strain ranges that has so far been inaccessible. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Aluminum, |