Ti-added alumina dispersion-strengthened Cu alloy fabricated by oxidation

•The bulk type of alumina dispersion-strengthened Cu alloy was fabricated by the diffusion of oxygen into the bulk alloy in ambient atmosphere.•The small Ti addition to an alumina-dispersed Cu alloy changed the shape and distribution of alumina in the Cu matrix.•The Ti added alumina dispersed alloy increase the alloy’s conductivity, strength and ductility simultaneously.

Two types of alumina dispersion-strengthened Cu alloy were fabricated by surface oxidation reaction by the aging of Cu–0.31 wt%Al and Cu–0.28 wt%Al–0.07 wt%Ti alloys in air. After heat treatment at 980 °C for 1 h in air, a 0.2 mm-thick alumina-dispersed plate could be prepared. The alumina-dispersed alloy with Ti addition showed higher values of conductivity, hardness, and tensile strength than the alloy without Ti.