About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Assessing Intragranular Orientations and Slip Processes during Cyclic Loading Using Crystal Plasticity and High-Energy X-Ray Microscopy |
Author(s) |
Justine Schulte, Dalton Shadle, Jonathan Hestroffer, Kelly Nygren, Matthew Miller, Tresa Pollock, Irene Beyerlein |
On-Site Speaker (Planned) |
Justine Schulte |
Abstract Scope |
To design the next generation of alloys with improved fatigue resistance, it is necessary to understand early-cycle slip events on a sub-grain level. Of particular importance is irreversible slip as it has been linked to fatigue damage. In this work, high energy x-ray diffraction microscopy (HEDM) is coupled with crystal plasticity finite element (CPFE) modeling to study intragranular slip and orientation gradient evolution during cyclic loading of polycrystalline Inconel 718. HEDM provides a 3D microstructure reconstruction that is replicated with a polycrystalline model. Additionally, the grain-scale time-resolved strain and orientation information from ff-HEDM can be used to validate the CPFE simulation results. The simulation can then predict patterns in orientation changes and slip during cyclic loading and identify regions of differing reversibility. Ultimately, the proximity of these regions to differing microstructural features can be examined lending insight to the influence of the grain neighborhood on cyclic properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Modeling and Simulation, |