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

• We produced new type of Al2O3–TiB2/Fe complex reinforcement.
• This reinforcement was produced by mechanical alloying and subsequent annealing.
• Different percentage of produced complex reinforcement was added to the Al matrix.
• The produced Al–(Al2O3–TiB2/Fe) composites were hot extruded.
• These composites show good ductility related to the nature of reinforcements.

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 °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.

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