Imperfections in Solids - Interfacial Defects - Grain Boundaries

5 important questions on Imperfections in Solids - Interfacial Defects - Grain Boundaries

What is a grain boundary?

A boundary that seperates two small grains or crystals with different crystallographic orientations in polycrystalline materials.

What is a low-angle grain boundary?

A grain boundary with a slight orientation mismatch.

What is the tilt boundary?

The angle of misorientation.
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What is the result of a tilt boundary parallel to the boundary?

A twist boundary.

What is a consequence of atoms that are bonded less regularly along a grain boundary?

There is an interfacial or grain boundary energy similar to the surface energy.

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