Matrix grain characterisation by electron backscattering diffraction of powder metallurgy aluminum matrix composites reinforced with MoSi2 intermetallic particles

Research highlightsSix extruded PM AA6061/MoSi2/15p were processed with and without ball milling
► EBSD was used to characterise matrix grain size and grain orientation.
► Ball milling decreases matrix grain size to submicrometric level.
► Ball milling produces a more equiaxed microstructure and larger misorientation.
► Increasing milling time produces matrix texture randomization.