On the basis of experimental work on polycrystals, it was concluded that dislocation structures - such as persistent slip bands - which had been introduced by cyclic deformation were more stable than those formed during static deformation.

Experimental Study of the Thermal Stability of Dislocation Structures Produced through Cyclic Deformation in Copper Polycrystals Z.Wang: Scripta Materialia, 1998, 39[4-5], 493-500