Adaptive domain misorientation approach for the EBSD measurement of deformation induced dislocation sub-structures - Matlab implementation. (Released under GPL v3+ license)
The adaptive domain misorientation approach can resolve sub-grains and dislocation cell using conventional EBSD. The measurement principle utilises measurement domains that are grown radially until a specified misorientation value has been reached. This enables stochastic analysis of local misorientation to be carried out within individual sub-grains and dislocation cells.
The sub-structural boundaries are classified according to the total misorientation across the boundary region, the thickness of which can vary from approximately one hundred nanometres to several hundred nanometres. Sub-grain boundaries with a total misorientation larger than 2° are resolved effectively for as-measured Hough-based EBSD data. De-noising of the EBSD data allows small dislocation cells to be resolved, typically having a misorientation of 0.4° – 1.0°. The developed approach is found suitable to various deformed metals, showing a significant increase in the level of detail resolved compared to the conventional kernel misorientation approach.
|Date made available||2 Mar 2021|