Abstract

Composites of 7075 aluminum alloy (Al 7075) with carbon-coated silver nanoparticles (Ag-C NP) were prepared by the mechanical milling process. It had been found that Ag-C NP have an effect in refining the powder and in the crystal size. MgZn 2 phase presents in annealed samples was dissolved by milling process. The Vickers microhardness (HVN) values are higher at higher Ag-C NP contents. It has been found that a saturation point exists where microhardness does not present variation.

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