Movie 5 - Polycrystalline ice aggregate deformed in pure shear over days. Click on the image to see the movie. It takes a few minutes to download. So please be patient.

With the movement of dislocations on glide planes and the development of the kink bands there is also dynamic recrystallisation.

Recrystallisation involves new grain nucleation and grain growth.

Recrystallisation can also reduce the original average grain size leaving behind a few relict deformed old grains (Grain size reduction).

New recrystallised grains are nucleated as small equiaxed grains and grain boundaries then begin to bulge and migrate as they undergo grain growth.

These new grains are themselves deformed with the continuing deformation.