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This Wiki page is dedicated to publishing open-access analysis methods for EBSD analysis of deformation induced dislocation sub-structures. Supplementary datasets are also provided as open access.

The space is under construction, and will actively be updated in January - March 2021.



Analysis tools:

Adaptive domain misorientation approach - basic methodology for resolving e.g. dislocation cells and sub-grains from deformed materials


Estimation of angular measurement noise for EBSD - methodology for estimating EBSD measurement accuracy


Grain size measurement using Matlab. Image based analysis of grain size and grain size distribution. An implementation that works directly with EBSD data using MTEX will be published Q2/2021.


References

[1]         Lehto P, Adaptive domain misorientation approach for the EBSD measurement of deformation induced dislocation sub-structures, Ultramicroscopy. (2021). Volume 222, 113203, https://doi.org/10.1016/j.ultramic.2021.113203.

[2]         Lehto P, Adaptive domain misorientation approach for the EBSD measurement of deformation induced dislocation sub-structures - Matlab implementation, (2021). https://doi.org/10.5281/zenodo.4430623. (Released under GPL v3+ license)

[3]         Lehto P, EBSD datasets for cross-sectioned structural steel hardness indentations., (2021). https://doi.org/10.5281/zenodo.4430628.

[4]         Lehto P, Estimation of angular measurement noise for EBSD. (2021). https://doi.org/10.5281/zenodo.4810793.

[5]         Lehto P, Remes H, Saukkonen T, Hänninen H, Romanoff J. Influence of grain size distribution on the Hall–Petch relationship of welded structural steel. Mater Sci Eng A 2014;592:28–39. http://dx.doi.org/10.1016/j.msea.2013.10.094. Download at: https://aaltodoc.aalto.fi/handle/123456789/19801

[6]         Lehto, P., Romanoff, J., Remes, H., Sarikka, T. Characterisation of local grain size variation of welded structural steel. Welding in the World. 2016; 60: 673-678. http://dx.doi.org/10.1007/s40194-016-0318-8


Contact information

Pauli Lehto, D.Sc. (Tech.)
Staff Scientist
Aalto University, School of Engineering
Visiting address: Otakaari 4, 02150 Espoo
P.O. Box 14100
Tel +358 50 523 3544
Pauli (dot) Lehto (at) aalto (dot) fi


tags: grain size measurement, kernel average misorientation, KAM, misorientation analysis, adaptive domain misorientation, dislocation cell structure, sub-grain boundary, EBSD, angular resolution, SEM, scanning electron microscopy
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