Consolidation behavior of mechanically alloyed aluminum based nanocomposites reinforced with nanoscale Y2O3/Al2O3 particles

► A method for preparing UFG aluminum nanocomposites through PM route discussed. ► Al2O3 and Y2O3 particulates increase micro-hardness and sinterability properties. ► Y2O3 particulates were found to have stable sinterability under varying sintering time. ► Temperature of 823 K and a soaking time of 180 min were found suitable for UFG MMCs. ► Uniform distribution and good interfacial integrity of particles were observed.