A study was made of the evolution of the dislocation structure in polycrystalline material under uniaxial loading. This was done by means of  in situ  X-ray diffractometry, using synchrotron radiation. It was concluded that the dynamic evolution of the dislocation density, and its spatial fluctuations during deformation, exhibited some variation. That is, the behavior was not simply behavior; as was generally accepted in the case of the static (unloaded) dislocation structures of plastically deformed metals. The dynamic recovery was attributed mainly to rearrangement of the dislocations. The variation of the dislocation density in the cell walls and interiors indicated a nearly periodic arrangement and/or annihilation of dislocations.

C.H.Chang, Y.M.Koo, B.P.Tolochko: Scripta Metallurgica et Materialia, 1995, 33[12], 1955-60