Questions tagged [grain-boundaries]

For questions about modeling of interfaces between crystalline structures.

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How to convert lab frame quaternions and plane normal to misorientation quaternion and crystal plane normal for grain boundaries?

Background Let qA and qB represent unit, orientation quaternions of grain A and grain B of a grain boundary in the lab reference frame, respectively. Let qm be the misorientation quaternion of qA and ...
11
votes
1answer
72 views

What does capital sigma followed by an integer (Σn) mean in the context of grain boundaries?

I've just run across a nomenclature for coincidence lattices at grain boundaries which uses a capital greek letter sigma followed by an integer. For example Grain Boundary Engineering & ...
18
votes
3answers
93 views

What tools are used for the preparation of grain boundary models?

What methods and tools are used for building models of grain boundaries? I mean initial models that are then optimized using molecular dynamics potentials or a different methods. When I was involved ...
16
votes
1answer
148 views

What kind of information can be extracted from alloy microstructure images converted to Fourier space?

I have some alloy microstructure images, showing elongated grains (darker colours) and the grain boundaries (lighter colours). If I take the Fourier transform of the image, there are directional bands ...