%0 Journal Article
%T Caracteriza£¿£¿o microestrutural dos alum¨ªnios comerciais AA1100, AA1050 e AA1070 e do alum¨ªnio superpuro AA1199
%A Oliveira
%A Janaina da Costa Pereira Torres de
%A Padilha
%A Angelo Fernando
%J Rem: Revista Escola de Minas
%D 2009
%I Escola de Minas
%R 10.1590/S0370-44672009000300017
%X a comparative study was carried out among three commercial purity aluminums with different levels of purity: aa1100 (99.00%), aa1050 (99.50%) and aa1070 (99.70%), produced on an industrial scale by direct chill (dc) process, and super pure aluminum, aa1199 (99.995%) produced in the laboratory. several techniques of microstructural analysis were used: conventional optical microscopy, scanning electron microscopy, optical microscopy with polarized light, measurements of electrical conductivity and vickers hardness. the three commercial purity aluminums showed an increase in work hardening and a decrease in electrical conductivity as the impurity content increased.
%K aluminum
%K homogenization
%K hot rolling
%K work hardening
%K characterization.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0370-44672009000300017&lng=en&nrm=iso&tlng=en