About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Polycrystalline Effects on Early Strain Heterogeneity Leading to Fracture for an Aluminium Alloy Under Plane Strain Tension: 3D Correlative X-Ray Tomography and Crystal Plasticity Simulations |
Author(s) |
Maryse Gille, Thilo F. Morgeneyer, Jette Oddershede, Romain Quey, Henry Proudhon |
On-Site Speaker (Planned) |
Henry Proudhon |
Abstract Scope |
The internal strain heterogeneity leading to fracture is studied in an aluminium alloy under plane strain tension, which is a common failure state in stamping processes. The polycrystalline effects are investigated using multimodal X-ray lab tomography 3D data acquired on a miniaturized plane strain tensile specimen. The real microstructure in the center of the undeformed specimen is obtained non-destructively using lab-based diffraction contrast tomography. Crystal plasticity finite element (CP-FE) simulations are performed on the meshed microstructure. Besides, digital image correlation is performed in the material bulk using intermetallic particles visible in absorption contrast tomography data acquired during an in situ tensile test performed in 12 increments up to fracture. Strong correlations are found between the CP-FE predictions based on the meshed real grain structure and the measured strain fields. The early strain heterogeneity in form of spatially stable slanted bands as precursor of final fracture is attributed to polycrystalline effects. |
Proceedings Inclusion? |
Undecided |