The 6101 alloy (series 6xxx) was modified with addition of 0.05% and 0.3% of
copper and with additions of grain refiners as Al-Ti-B. The alloys were thermally
characterized (heat transfer coefficient of metal / mold, displacement speed of
liquidus isothermal and cooling rate), mechanically (tensile strength and toughness
module) and electrically (electric resistivity, specific resistance and power
conductivity) using two forms of pouring out: one is horizontal directional solidification
and the other into the "U" mold. By horizontal directional solidification was possible
characterize the macrostructure, influenced by refiners of grain and by viscosity that
copper provides in the metal / mold efficiency of alloys researched, modifying the
thermal, mechanical and electrical properties. The solidification in "U" mold makes
possible evaluates the mechanical and electrical properties, seeing the forming
process variables of alloys, as forming rate, tensile strength, toughness and electric
resistivity, power conductivity and electric resistance, using the specimens obtained
in several diameters. For the “U” mold were casting more two alloys to evaluation,
Al-0,6Mg-0,4Si-0,1Cu and Al-0,6Mg-0,4Si-0,2Cu. The mechanical and electrical
properties had been influenced by cold working, copper content and shrinkage void
presents into alloys structures.
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