The global energy context presents a steady increase in electricity consumption in the
last century, thus requiring the search for new materials for use in wire and cable conductors
of electricity. From these demands for new materials, was developed an analysis of the
influence of solute titanium and zirconium in the modification of important characteristics of
the Al-Cu-Fe-Si alloy, destined to be the middle conductor of electricity, aiming to get
properties resistant to heat. For this study, the alloys were obtained by direct casting in Ushaped
metal ingots, from the Al-EC, standing at the base levels of 0.05 wt% Cu, [0.24 to
0.28] wt% Fe and 0.7 wt% Si, and then inserting the contents of 0.26 wt% Zr and 0.26 wt%
Ti. The experiments were, divided in two steps, STEP A and STEP B , respectively. In order
to characterize mechanical, electrical and structure of alloys. The specimens after cold rolling
(in diameters of 2.7, 3.0, 3.8 and 4.0 mm) were analyzed without heat treatment (STT) and
with heat treatment (CTT): 230 °C for one hour, according to the protocol COPEL
(Companhia Paranaense de Energia Elétrica), 310 °C and 390 °C for one hour, to evaluate the
heat resistance at higher temperatures, thermal stability and analyze the microstructures
developed in these heat treatments (TT). It was found that Ti has more capacity to refine the
grain compared to Zr, which has less refined grains, but with better physical properties are
presented and heat resistant.
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