Journal article

ECAP consolidation of Al matrix composites reinforced with in-situ gamma-Al2O3 nanoparticles

R Casati, A Fabrizi, A Tuissi, K Xia, M Vedani

Materials Science and Engineering A | ELSEVIER SCIENCE SA | Published : 2015

Abstract

This work is aimed at proposing a method to prepare aluminum matrix composites reinforced with γ-Al O nanoparticles and at describing the effects of an in-situ reaction on the resulting nano-reinforcement dispersed throughout the metal matrix. Al nano- and micro-particles were used as starting materials. They were consolidated by equal channel angular pressing (ECAP) in as-received conditions and after undergoing high-energy ball milling. Further, γ-Al O reinforcing nanoparticles were produced in-situ from the hydroxide layer that covered the Al powder particles. The powder particle morphology and the composites microstructures were investigated by electron microscopy. The transformation p..

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University of Melbourne Researchers