Merge Colonies¶
Group (Subgroup)¶
Reconstruction (Grouping)
Description¶
This Filter groups neighboring Features that have a special misorientation that is associated with alpha variants that transformed from the same beta grain in titanium. The algorithm for grouping the Features is analogous to the algorithm for segmenting the Features, except the average orientation of the Features are used instead of the orientations of the individual Elements and the criterion for grouping is specific to the alpha-beta transformation. The user can specify a tolerance on both the axis and the angle that defines the misorientation relationship (i.e., a tolerance of 1 degree for both tolerances would allow the neighboring Features to be grouped if their misorientation was between 59-61 degrees about an axis within 1 degree of a2, as given by the 3rd special misorientation below).
The list of special misorientations can be found in the paper by Germain et al.1 and are listed here:
| Angle | Axis |
|---|---|
| 0 | Identity |
| 10.529 | c = <0001> |
| 60 | a2 = <-12-10> |
| 60.832 | d1 at 80.97 degrees from c in the plane of (d3,c) |
| 63.262 | d2 at 72.73 degrees from c in the plane of (a2,c) |
| 90 | d3 at 5.26 degrees from a2 in the basal plane |
Parameters¶
| Name | Type | Description |
|---|---|---|
| Axis Tolerance (Degrees) | float | Tolerance allowed when comparing the axis part of the axis-angle representation of the misorientation to the special misorientations listed above |
| Angle Tolerance (Degrees) | float | Tolerance allowed when comparing the angle part of the axis-angle representation of the misorientation to the special misorientations listed above |
| Use Non-Contiguous Neighbors | bool | Whether to use a non-contiguous neighbor list during the merging process |
| Identify Glob Alpha | bool | Whether to identify glob alpha regions during the merging process |
Required Geometry¶
Not Applicable
Required Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Feature Attribute Array | NonContiguousNeighbors | List of int32_t | (1) | List of non-contiguous neighbors for each Feature. Only needed if Use Non-Contiguous Neighbors is checked |
| Feature Attribute Array | NeighborList | List of int32_t | (1) | List of neighbors for each Feature |
| Element Attribute Array | FeatureIds | int32_t | (1) | Specifies to which Feature each Element belongs |
| Element Attribute Array | Phases | int32_t | (1) | Specifies to which Ensemble each Element belongs |
| Feature Attribute Array | Phases | int32_t | (1) | Specifies to which Ensemble each Feature belongs |
| Feature Attribute Array | AvgQuats | float | (4) | Specifies the average orientation of the Feature in quaternion representation |
| Ensemble Attribute Array | CrystalStructures | uint32_t | (1) | Enumeration representing the crystal structure for each Ensemble |
Created Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Element Attribute Array | ParentIds | int32_t | (1) | Specifies to which parent each Element belongs |
| Element Attribute Array | GlobAlpha | int32_t | (1) | Specifies to which glob alpha each Element belongs. Only created if Identify Glob Alpha is checked |
| Attribute Matrix | NewFeatureData | Feature | N/A | Created Feature Attribute Matrix name |
| Feature Attribute Array | ParentIds | int32_t | (1) | Specifies to which parent each Feature belongs |
| Feature Attribute Array | Active | bool | (1) | Specifies if the Feature is still in the sample (true if the Feature is in the sample and false if it is not). At the end of the Filter, all Features will be Active |
References¶
[1] L. Germain, N. Gey and M. Humbert, Reliability of reconstructed Beta orientation maps in titanium alloys, Ultramicrscopy, 2007, 1129-1135.
Example Pipelines¶
License & Copyright¶
Please see the description file distributed with this Plugin
DREAM.3D Mailing Lists¶
If you need more help with a Filter, please consider asking your question on the DREAM.3D Users Google group!