Abstract
Nanocrystalline 4Fe-Al2O3 composite was simultaneously synthesized and consolidated by pulsed current activated sintering (PCAS) method within 5 min from mechanically activated powders of Fe2O3 and 2FeAl. The average grain size and mechanical properties of the composite were investigated. The average grain sizes of Fe and Al2O3 prepared by PCAS were about 75 nm and 54 nm, respectively. The average hardness and fracture toughness values obtained were 770 kg/mm2 and 9.3 MPa x m1/2, respectively.
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