Deformation of decagonal Al-Cu-Co single quasicrystals

Abstract

Deformation process of decagonal single quasicrystals of Al-Cu-Co alloy was studied by X-ray topography an optical microscopy. The deformation was performed at elevated temperature (550°C) not higher than the temperature of disordering transformation of clusters inside anti-phase domains (600°C). It was found that at a deformation of about 3-5% glide occurs only in the direction of ten-fold symmetry axis in which the boundaries of anti-phase domains are arranged. At a deformation of about 7-9% the samples cracked.