Texture distribution and plane strain mechanical behavior of AA 7xxx plates of different thicknesses. http://dx.doi.org/10.1007/s11665-009-9355-4

Abstract

Texture distribution of a rolled aluminum alloy type AA 7449 plate having two thicknesses is presented here. The mechanical behavior of these aluminum alloy plates under plane strain compression (PSC) was studied under different shear stress textures. Crystallographic texture of specimens was characterized by x-ray diffraction and the corresponding volume fractions of each texture component were determined. The obtained results show that shear stress texture components are concentrated at layers immediately below the surface, as it had been previously proposed. Additionally, specimens were subjected to hot PSC to mimic industrial hot rolling process under controlled conditions. The measured rheological parameters, strain rate sensitivity coefficient m, and activation energy Q, show that the mechanical behavior under PSC is more sensitive to test conditions than to the shear stress texture.