An analysis of elementary dislocations in icosahedral Al-Pd-Mn by large Angle Convergent-Beam Electron Diffraction (LACBED)

摘要

Large Angle Convergent Beam Electron Diffraction (LACBED) experiments on dislocations located in the mirror planes of icosahedral AlPdMn single grains show that - as previously inferred from standard image contrast technique - the direction of the Burgers vector is perpendicular to the mirror plane of movement, thus confirming the fact that climb should be an important process for the plasticity mechanisms in icosahedral quasicrystals.