About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Atomistic Simulations Linked to Experiments to Understand Mechanical Behavior: A MPMD Symposium in Honor of Professor Diana Farkas
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Presentation Title |
Role of microstructure and strength on the development of slip localizations in polycrystals |
Author(s) |
Behnam Ahmadikia, Rembert White, Jean-Charles Stinville, Tresa M. Pollock, Irene J. Beyerlein |
On-Site Speaker (Planned) |
Irene J. Beyerlein |
Abstract Scope |
Using a suite of advanced microscopy and 3D spatially resolved crystal plasticity techniques, we investigate the evolution of slip localizations during monotonic and cyclic loading in a range of polycrystalline face centered cubic or hexagonal close packed materials. As part of the approach, a model for the formation and intensification of discrete crystallographic slip bands within grains is presented. The model predictions are validated via comparisons with experimental observations on Ti and Mg alloys and Ni-based superalloys. Simulations with this model focus on the development of local stress and strain fields and activated slip modes both within the parent grain and ahead of the slip band in the neighboring grain. We discuss the role of grain size, grain neighbor orientation, and material strength on the propensity for slip localizations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Modeling and Simulation, Mechanical Properties, Computational Materials Science & Engineering |