Abstract
The work is aimed at study of changes of microstructural characteristics of Cu-CuO-Al₂O₃ material depending on the volume portion of dispersoid. Nanocrystalline powder mixtures with the dispersoid amounts from 1 to 10 % vol. were prepared by the original mechano-chemical method [1, 2]. In individual stages of preparation of the powder mixtures, a change of the morphology of Cu-particles takes place. With the increasing volume portion of the secondary phase, the structure of the powder Cu-matrix is refined. In compact materials deformation texture is formed during extrusion, however, with the increasing amount of the dispersoid it is suppressed.

Key words
dispersion strengthened copper, dispersoid, nanocrystalline materials, microstructure

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