Synthesis and characterization of Al (Al2O3-TiB2/Fe) nanocomposite by means of mechanical alloying and hot extrusion processes

摘要

Synthesis and characterization of Al-(Al2O3-TiB2/Fe) nanocomposite by means of mechanical alloying and hot extrusion processes was the goal of this study. For this regards, mechanical alloying was done in two steps; formation of Al2O3-TiB2/Fe reinforcements and preparation of Al- base nanocomposite. Results showed that Al2O3-TiB2/Fe nanocomposite powders can synthesis by mechanical alloying and subsequent heat treatment at 700 degrees C. Hot extrusion of powder samples lead to preparation of fully dense Al- base nanocomposite. With increasing the amount of complex reinforcements, the compression strength was increased and reached to 560 MPa. Consolidated samples show good ductility related to the nature of Al2O3-TiB2/Fe reinforcements. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.