Improved simulation based HR-EBSD procedure using image gradient based DIC techniques
(2017) Ultramicroscopy — Vol. 182, p. 17-27 (2017)
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- Authors
Marteleur, Matthieu 
- Abstract
- Conventional HR-EBSD is attracting much interest due to its ability of measuring relative crystal misori- entations and microstresses with great accuracy. However, this technique needs the use of simulated pat- terns in order to get absolute values of crystal orientation and stresses and thus expand its use to inter- granular analyses. Simulation-based approaches have shown many limitations due to the poor correlation with the real patterns specially when Bragg simulations are considered. This paper presents an improved algorithm based on gradient-based correlation techniques that makes simulation-based HR-EBSD possible. Based on this new algorithm, a new pattern center calibration procedure is proposed and validated. Also, a new hybrid procedure that combines simulation-based HR-EBSD with conventional HR-EBSD is pre- sented that enables an absolute determination of both orientations and stresses with improved accuracy. The hybrid HR-EBSD is used to analyze the martensitic transformation induced by plastic deformation in an as-quenched Ti-12wt.%Mo alloy.
- Affiliations
University of Navarra CEIT and TECNUN
Citations
Alkorta, J., Marteleur, M., & Jacques, P. (2017). Improved simulation based HR-EBSD procedure using image gradient based DIC techniques. Ultramicroscopy, 182, 17-27. https://doi.org/10.1016/j.ultramic.2017.06.015 (Original work published 2017)