Avaliação da resistência elétrica e mecânica da liga de alumínio série 6101 modificada com 0,16%Nb

Abstract

The requirement for better materials for electrical cables has demanded the need of new, stronger and better conductivity aluminum metal composites. 6xxx series alloys, more specifically 6101 and 6201, have been combined with various chemical elements, heat treated and artificially aged to improve mechanical strength and conductivity. Brazil is the largest producer, exporter and holder of the worldwide niobium deposits. Thus, this metal has a high potential as a very promising alloying element for the target material of this study, when it combined with other metals, makes the material superconducting, has a medium grain refinement effect, an aggregating action to improvement of mechanical strength. In this study it will be proposed to add [0.16]%Nb to the Al-0,05%Cu-[0,24-0,28]%Fe-0,5%Si-0,6%Mg, casting in “U” metal shell evaluating the behavior of the heat resistance according to COPEL protocol (Companhia Paranaense de Energia Elétrica), mechanical, electrical resistance and microstructural characterization.