Abstract:A novel process for manufacturing Al-0.70Fe-0.24Cu alloy conductor was proposed, which includes horizontal continuous casting and subsequent continuous extrusion forming (Conform). The mechanical properties, electrical conductivity and the compressed creep behaviour of the alloy were studied. The results indicate that the Conform process induces obvious grain refinement, strain-induced precipitation of Al₇Cu₂Fe phase and the transformation of crystal orientation distribution. The processed alloy has good comprehensive mechanical properties and electrical conductivity. Moreover, a better creep resistance under the conditions of 90 °C and 76 MPa is shown compared with pure Al and annealed copper, and the relationship between primary creep strain and time may comply with the logarithmic law. The enhanced properties are attributed to the grain refinement as well as the fine and homogeneously distributed thermally stable AlFe and Al₇Cu₂Fe precipitation phases.

Key words: Al-0.70Fe-0.24Cu alloy; horizontal continuous casting; continuous extrusion forming; microstructure; property