· A Twin Boundary separates two crystallites that are structural mirror- images of each other.

· A representation of how Twins are produced in Magnesium by mechanical deformation is shown at right. 

· The twin plane is the (1012) plane and slip occurs on the (0001) basal planes (slip lines)
 
 
 
 

Drag the slider bar in the image at right to various positions to see an animation of the twinning process.