Влияние асимметрии формы дислокационных розеток, возникающих в подложках композитных структур плёнок [Articol]

Abstract

The paper studies the deformation specifics of composite structures (CS) of the film/substrate type (Cu/LiF and Cu/MgO) during nano-microindentation. A number of regularities accompanying the process of formation of indentations in LiF and MgO substrates depending on the CS film thickness (tc = 85, 470 and 1000 nm) are established. The effect of the shape asymmetry of Berkovich dislocation rosettes is revealed, the orientation effect of indentation and dislocation structure formation depending on the relative position of the indenter, slip elements and crystallographic directions of the sample is detected. The main factors responsible for the revealed regularities are established.