About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Characterization of Minerals, Metals and Materials 2026 - In-Situ Characterization Techniques
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| Presentation Title |
Statistics of slip, twinning, and grain boundary sliding/opening in HCP zinc coatings, from in-situ EBSD-SEM-DIC tests |
| Author(s) |
Johan Hoefnagels, Dennis Konig, Gert-Jan Slokker, Casper Mornout, Tijmen Vermeij |
| On-Site Speaker (Planned) |
Johan Hoefnagels |
| Abstract Scope |
Plasticity in hexagonal close-packed (HCP) metals is notoriously complex due to high anisotropy, multiple active HCP crystallographic slip families, twinning, and grain boundary (GB) sliding/opening. This study applies novel, high-resolution in-situ EBSD-SEM-DIC methods to systematically identify and quantify all active deformation mechanisms in zinc coatings, relevant for corrosion protection of steel. These methods enable ~40 nm strain mapping aligned with EBSD data [Vermeij et al., Exp. Mech. (2022); Scripta Mater. (2022)] and advanced analysis routines to compute quantitative maps of all HCP slip and twinning systems and GB sliding/opening maps [Vermeij et al., Acta Mater. (2023); Strain (2024); Mornout et al., Scripta Mater. (2025)]. A statistical analysis across >300 grains and ∼2.9 mm GB length has revealed correlations between slip system activation, twinning, and GB sliding/opening, and their (mis-)orientation angles (with respect to loading). These insights lead to a comprehensive hypothesis of zinc plasticity, to be presented at TMS 2026. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Shaping and Forming, Surface Modification and Coatings |