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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Verification, Calibration, and Validation Approaches in Modeling the Mechanical Performance of Metallic Materials
Presentation Title Using a Calibrated Virtual Beamline to Validate Crystal Plasticity Models Against Far-Field 3DXRD Data on Multiple Length Scales
Author(s) Sven E. Gustafson, Varun Rao, Paul Dawson, Matthew Miller, Kelly Nygren
On-Site Speaker (Planned) Sven E. Gustafson
Abstract Scope An outstanding challenge within the structural metals community is the ability to compare and validate crystal plasticity models at consistent length scales (intragranular). While characterization techniques such as electron backscatter diffraction, scanning 3DXRD, and dark field x-ray microscopy already provide critical validation datasets, they cannot always operate with sufficient temporal resolution, and large enough field of view, to characterize samples undergoing time sensitive, uninterruptable in-situ experiments. While far-field 3DXRD is capable of tracking micromechanical statistics for a polycrystalline sample during in-situ experiments on the ~15 second time scale, it is generally considered a grain averaged technique. Within this work, a calibrated mechanical virtual diffraction experiment (MechVDE) is presented to enable direct comparisons, on the diffraction image scale, between far-field 3DXRD and crystal plasticity for a monotonic deformation experiment on a Niobium alloy. Validation methodologies are presented on both the grain average scale and the intragranular scale.
Proceedings Inclusion? Planned:
Keywords ICME, Characterization, Modeling and Simulation

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