摘要：The objective of this study is to evaluate the effect of additions of iron in electro conducting aluminum [Al-EC], without grain refiner, that respect to the formation of the macrostructure, as the grain size, and its influence on the Electric Conducting. Initially, for this study it was elaborated a alloy that represent as Al-0,05%Cu-0,11%Fe and stipulated to identify as Al-EC. Later, this alloys was modified with contents: [0,40; 0,80; 1,10 and 1,60] %. The alloy had been casting in crucible silicon´s Carbon ,in an oven of the type muffle and casting in a mold in “U” format .Thermocouples of K type had been used to verify the temperature of casting. The results show that the iron when controll the growth of the grain presents a effect of transistion for contents between of 0,8%, presenting the biggest size of grain without, however, affect the mechanics capacity and electricity coducting.
关键词：macrostructure ; size of grain ; mechanical and electric properties
