A method of EBSD3.

the kernel average misorientation of a volume: the mean misorientation angle of every voxel to its neighbours; MATLAB’s KAM of EBSD3

Syntax

kam = KAM(ebsd)

The six face neighbours.

kam = KAM(ebsd, order=2)

The neighbours up to the second order.

kam = KAM(ebsd, threshold=5*degree)

Misorientations above 5 degree left out.

kam = KAM(ebsd, max=True)

The largest angle instead of the mean.

Description

The neighbours of a voxel are those within order steps along the axes of the grid, of the same phase. On a volume that carries grain ids (after calcGrains) only the neighbours of the same grain count, unless a threshold is given; without grain ids the misorientations above the threshold, 10 degree by default, are left out. A voxel with no neighbour is NaN. The volume holds one indexed phase. The angles are in radian.

Input

ebsd EBSD3 of one indexed phase

Keywords

keyword default description
order 1 the neighbours up to this many steps, the sum of the steps along the axes
threshold None a misorientation angle above it is left out, instead of the grains
max False the largest misorientation angle instead of the mean

Output

kam array of the shape of the volume, the angles in radian

See also

EBSD.KAM, EBSD3.gradientX, calcGrains, EBSD3Analysis

MATLAB’s EBSD3.KAM

source

Citing this page. This page is part of the documentation of MTEX, a free and open source MATLAB toolbox for analyzing and modeling crystallographic textures. It was written by The MTEX Developers and is published at https://mtex-toolbox.github.io/EBSD3.KAM_py.html. If you use MTEX, or reuse text or figures from this page, in your research, please cite

F. Bachmann, R. Hielscher, H. Schaeben: Texture Analysis with MTEX - Free and Open Source Software Toolbox, Solid State Phenomena 160 (2010), 63-68. 10.4028/www.scientific.net/SSP.160.63

BibTeX 
@article{bachmann2010mtex,
  author  = {F. Bachmann and R. Hielscher and H. Schaeben},
  title   = {Texture Analysis with MTEX - Free and Open Source Software Toolbox},
  journal = {Solid State Phenomena},
  volume  = {160},
  pages   = {63-68},
  year    = {2010},
  doi     = {10.4028/www.scientific.net/SSP.160.63},
  url     = {https://doi.org/10.4028/www.scientific.net/SSP.160.63}
}

Other papers describing specific MTEX methods are listed under Publications — please cite the one that best fits your application. The MTEX source code is licensed under the GNU General Public License v2.0; the text and figures of this documentation are licensed under CC BY 4.0, which permits reuse — including by automated systems — provided The MTEX Developers and this page are credited.