About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
Presentation Title |
Intragranular Slip Localization Modeling Applied to Fatigue Crack Nucleation |
Author(s) |
Aldo Marano, Mathieu Musy--Haspel, Lionel Gélébart, Samuel Forest |
On-Site Speaker (Planned) |
Aldo Marano |
Abstract Scope |
Bridging the gap between the development of plastic slip heterogeneities and the nucleation of cracks is crucial for improving the understanding of fatigue life in metallic materials. This study presents two modeling strategies for capturing intragranular slip localization within high-resolution 3D crystal plasticity simulations of polycrystals. The first strategy incorporates material softening on slip systems, coupled with strain gradient plasticity, to naturally trigger slip localization. The second strategy employs a geometrically explicit modeling of slip bands. Both approaches are applied to simulate the cyclic deformation of an Inconel 718 polycrystal, assessing their effectiveness in capturing slip heterogeneities, the influence of interfaces (such as free surfaces and grain boundaries), and their computational efficiency. Finally, the potential of this modeling framework to establish criteria for slip-mediated crack initiation is discussed. |
Proceedings Inclusion? |
Undecided |