Twinning is a microstructure formed in certain crystalline materials as a response to physical stress. It is identified as fine-scale bands within the material, where in each band the material takes on a fixed orientation, but in adjacent bands it takes on different but symmetry related orientation.
Twinning has to do with martensites.
These pictures are the visualization of computed approximate equilibrium states of the material for a model problem which allows twinning. The different colors represent the different orientations.
Last Modified: November 14, 1995