DREAM3D User Manual
Generate Face Misorientation Colors

Group (Subgroup)

Generic Filters (Misc)

Description

This filter will generate colors based on the method developed by C. Schuh and S. Patala for Cubic, Hexagonal, Tetragonal, or Orthorhombic Crystal Structures (currently only cubic high is working)[1]. Orientations are colored by disorientation relative to a reference orientation. The user can enter a reference orientation which is relative to the sample reference frame. The default reference orientation is the sample frame (misorientation from sample frame: 0 degrees about [001]).

The user is required to run a filter that will determine if a voxel should have it's color calculated by generating the GoodVoxels array or an equivalent boolean array. Typically the MultiThreshold Cells or Single Threshold Cells filter is run before this filter with an output array set to GoodVoxels.

Important Implementation Notes

The user should be aware of the crystal symmetry (Laue Group and Point Group) of their data. The Filter is only valid for certain point groups within a Laue group (See table below).

Color Output Notes

With other coloring methods such as IPF bad voxels which result from non-indexed EBSD scans can be colored with a black color (RGB= 0,0,0). Since the Misorientation Coloring scheme uses all possible colors, marking voxels in an image in such a way that the voxels stand out is not possible.

Crystal Symmetry Implementations

Crystal Symmetry (Laue) Hermann–Mauguin Symbol Schoenflies Symbol Laue Class Implemented (Legend)
Triclinic 1, -1 C1, C1 -1 Not Implemented
Monoclinic 2, m, 2/m C2, Cs, C2h 2/m Not Implemented
Orthorhombic 222,, 2/m 2/m 2/m D2, D2h mmm
MisorientationLegendD2_222.png
Orthorhombic mm2 C2v mmm Not Implemented
Trigonal (Low)3, -3 C3, C3i -3 Not Implemented
Trigonal (High) 32, 3m, -32/m D3, C3v, D3d -3m Not Implemented
Tetragonal (Low) 4, -4, 4/m C4, S4, C4h 4/m Not Implemented
Tetragonal (High) 422, 4/m 2/m 2/m D4, D4h 4/mmm
MisorientationLegendD4_422.png
Tetragonal (High) 4mmm, -42m C4v, D2d 4/mmm Not Implemented
Hexagonal (Low) 6, -6, 6/m C6, C3h, C6h 6/m Not Implemented
Hexagonal (High)622, 6/m 2/m 2/m D6, D6h 6/mmm
MisorientationLegendD6_622.png
Hexagonal (High)6mm, -62m C6v, D3h 6/mmm Not Implemented
Cubic (Low) 23, 2/m-3 T, Th m-3
MisorientationLegendT_23.png
Cubic (High) 432, 4/m -3 2/m O, Ohm-3m
MisorientationLegendO_432.png
Cubic (High) -43m Tdm-3m Not Implemented

Example Output Image

MisoColor_Small_IN100.png
Small IN100 courtesy of [2] showing a generally random texture
Miso_fw-ar-IF1-avtr12-corr.png
Interstitial Free (IF) Steel courtesy of [3] showing a strong texture

Input Options

Option Type
x Reference Frame Misorientation Axis Double
y Reference Frame Misorientation Axis Double
z Reference Frame Misorientation Axis Double
w Reference Frame Misorientation AngleDouble

Required DataContainers

Voxel

Required Arrays

| Type | Default Name | Description | Filters Known to Create Data | |---—|-----------—|----------—|------—|----—| | Face | SurfaceMeshFaceLabels | N x 2 Col of signed integer | | Quick Surface Mesh (SurfaceMeshing), M3C Surface Meshing (Slice at a Time) | | Field | AvgQuats | These are the orientations used to determine the colors | Find Field Average Orientations | | Field | FieldPhases | These are used to determine which ensemble the Field belongs to | Find Field Phases | | Ensemble | CrystalStructures | These are the symmetries of the ensembles, which dictate orientation operations and which color palatte is used | Read H5Ebsd File (IO), Read Ensemble Info File (IO), Initialize Synthetic Volume (SyntheticBuilding) |

Created Arrays

Type Name Description
Cell MisorientationColors The RGB colors are encoded as an unsigned char triplet

Authors

Copyright: 2013 William Lenthe (University of California Santa Barbara)

Contact Info: willl.nosp@m.enth.nosp@m.e@gma.nosp@m.il.c.nosp@m.om

Version: 1.0.0

License: See the License.txt file that came with DREAM3D.

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References

[1] Patala, S., Mason J., Schuh C., 2012. Improved representations of misorientation information for grain boundary science and engineering. Prog Mater Sci. 57, 1383-1425.

[2] Groeber M, Haley BK, , Uchic MD, Dimiduk DM, Ghosh S: 3D reconstruction and characterization of polycrystalline microstructures using a FIB–SEM system Data Sets. Materials Characterization 2006, 57:259—-273.

[3] Nathalie Allain-Bonasso, Francis Wagner, Stéphane Berbenni, David P. Field, A study of the heterogeneity of plastic deformation in IF steel by EBSD, Materials Science and Engineering: A, Volume 548, 30 June 2012, Pages 56-63, ISSN 0921-5093, http://dx.doi.org/10.1016/j.msea.2012.03.068. (http://www.sciencedirect.com/science/article/pii/S0921509312004388)

[4] http://reference.iucr.org/dictionary/Laue_classes