Abstract

Recently it was shown that the Al–Cu–Fe–Cr system can form a microstructure consisting mainly of quasicrystalline and α-Al phases by arc-melting and subsequent annealing of an appropriate composition. In the present work we demonstrate that it is possible to fabricate a large volume of this composite directly from the liquid phase by spray forming an Al85Cu6Fe3Cr6 (%at) alloy. The overspray powder and an arc-melted sample were also analyzed. Tribological properties of the Al-based composite reinforced with quasicrystals was evaluated by pin-on-disk tests, which demonstrated to be superior than an Al–Si alloy, A380, used in this work as a comparison material.

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