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 |
Study of Strain Localization and Crystal Reorientation at the Early Stage of Plastic Deformation Using Laser Confocal Microscopy, EBD and DCT-6D |
Author(s) |
Damien Texier, Sylvain Vallot, Julien Genée, Malo Jullien, Henry Proudhon, Wolfgang Ludwig, Jean-Charles Stinville |
On-Site Speaker (Planned) |
Damien Texier |
Abstract Scope |
High-resolution digital image correlation (HR-DIC) techniques are well established for measuring strain localization at the sub-granular level in polycrystalline materials. HR-DIC has generally been performed under scanning electron microscopy (SEM) to gain in spatial resolution and micrograph repeatability. However, HR-DIC under SEM only provides information on the in-plane kinematic field at the surface of deformed samples. Laser scanning confocal microscopy (LSCM) provides less plane-resolved micrographs but highly accurate topographical information. A 3D formulation of the HR-DIC problem was therefore implemented to evaluate the 3D nature of the deformation in a polycrystalline Ni-based superalloy. Access to the topography of the deformed sample also enabled the study of crystalline reorientation between slip bands as a result of deformation. These crystal lattice reorientations were also compared with quasi high-resolution EBSD (HR-EBSD) and diffraction contrast tomography (DCT) measurements allowing for orientation gradient measurement in the inverse calculation method. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Copper / Nickel / Cobalt |