SOUZA, SAUL H. dePLAUT, RONALD L.LIMA, NELSON B. deOLIVEIRA, RENE R. dePADILHA, ANGELO F.2021-07-232021-07-232021SOUZA, SAUL H. de; PLAUT, RONALD L.; LIMA, NELSON B. de; OLIVEIRA, RENE R. de; PADILHA, ANGELO F. The occurrence of a peripheral coarse grain zone (PCGZ) in extruded bars of AA 7108. <b>Materials Science Forum</b>, v. 1016, p. 1141-1146, 2021. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.1016.1141">10.4028/www.scientific.net/MSF.1016.1141</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32044.0255-5476http://repositorio.ipen.br/handle/123456789/32044Industrial-scale extruded profiles of AA 7108 with a rectangular section (25.60 mm x 15.95 mm) were used in this investigation. Some complementary microstructural analysis techniques, such as polarized light microscopy, EBSD (Electron Backscatter Diffraction) and X-ray diffraction were used to characterize the microstructure, focusing on the PCG zone. It was observed that the extruded profiles presented a totally recrystallized microstructure and a 300 μm layer of peripheral coarse grains. Additionally, the results showed that the PCGZ predominant grain orientation {311} <110> differs from the texture below the PCGZ (Goss and Cube components).1141-1146closedAccessaluminium alloyscrystallographymicrostructuremetallographyextrusionArtigo de periódico101610.4028/www.scientific.net/MSF.1016.11410000-0002-6444-9224https://orcid.org/0000-0002-6444-9224Sem Percentil16.00