Microstructural changes were monitored in pure metals which had been cold-rolled to a wide range of strains. Various configurations were characterized, and it was found that dislocation rotation boundaries were the predominant feature which sub-divided the grains on a finer and finer scale as the strain increased. These boundary configurations of dislocations were analyzed on the basis of the low-energy dislocation structure hypothesis, and agreement was found. Equations were suggested for the relationship between flow stress and microstructural parameters.

N.Hansen, D.A.Hughes: Physica Status Solidi A, 1995, 149[1], 155-72