Consolidation of cryomilled Al–Si using spark plasma sintering

摘要: Cryomilled eutectic aluminum–12% silicon powder was sintered using spark plasma sintering (SPS) to create bulk compacts. The cryomilling serves break up and disperse the phase in a well-distributed Si throughout matrix modify morphology of from plate-like spherical, whilst refining aluminium grain size nanometric level. effects different times temperatures SPS on densification powder, evolution, growth change were investigated. compacts analysed X-ray diffraction, scanning electron microscopy optical microscopy. initial stages appear be highly dependent yield strength powder. An estimate temperature gradient seen bed made calculated near 200 °C at highest point. Al investigated it was...