lgK as a function of 1/ΠΆ for indium doped E-AlMgSi aluminum conductor alloy (Aldrey): (a) undoped alloy, (b) 0.05 wt.% indium, (c) 0.1 wt.% indium, (d) 0.5 wt.% indium and (e) 1.0 wt.% indium.