Influence of plasma of the glow discharge in the environment of argon on the transformation of structure of a electroplated coating on a copper substrate is investigated. It has been established that the enlargement of the microstructure and the change in the surface morphology are the main ones with the effect of transformation of the structure of the electroplated coating of copper. The effect is accompanied by the formation of a new grain at the boundary of the coating and substrate. The microstructure of the copper substrate does not change. According to the results of the texture analysis, it can be assumed that relaxation processes responsible for the change in the structure are the recovery (substrate) and the polygonization by which coherence scattering blocks (electroplating) enlargemen occursIt is shown that the enhancement of the deformation texture of the copper substrate is accompanied by a decrease in the level of macrostresses. There are no changes in the microstresses in the galvanic layer and in the substrate.