Effects of cold rolling on the microstructure and crystallographic texture of aluminum alloy 7108

Abstract

Herein, industrial-scale extruded profiles of aluminum alloy (AA) 7108 with rectangular cross-sections of dimensions 25.60 mm × 15.95 mm were used to investigate the effect of number of passes and strain rate on their crystallographic texture. After the initial microstructural and textural characterization, the samples were solution-annealed and cold-rolled using different numbers of passes to achieve the same degree of reduction. The samples that were cold-rolled for a few number of passes exhibited a remaining Cube texture component {001} <001> (similar to that observed in the AA 7108 as-received bars), a Goss component {011} <001>, and a Brass component {011} <211>. In contrast, the samples rolled for a high number of passes demonstrated only a strong Goss component {011} <001>.