About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
On Sampling Discrete Orientations for Texture Representation in Aggregates with Varying Grain Size |
| Author(s) |
Aditya Vuppala, Alexander Krämer, Johannes Lohmar |
| On-Site Speaker (Planned) |
Johannes Lohmar |
| Abstract Scope |
The amount of orientation difference of crystallites i.e. the texture in a metallic polycrystal governs, plastic anisotropy, electrical and magnetic properties of the material. While the grain size and morphology of polycrystals is often determined via light-optical microscopy, their texture is conventionally analyzed by X-ray diffraction measurements. However, these measurements cannot be correlated. Thus when modeling the texture evolution by means of the CP-FEM method, a sampling of orientations onto grains is required. Here a concept of sampling is introduced that first assigns only the highest weighted orientations generated via an ODF to the few grains of the RVE. This gives an overly sharp texture, especially for inhomogeneous aggregates. Now orientations within the aggregate are rotated in Euler space to match the experimental ODF through an optimization procedure. This enables a re-creation of the measured texture in aggregates with only a few grains and varying grain size. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |