Abstract

ROMERO-RESENDIZ, L. et al. Repetitive corrugation and straightening effect on the microstructure, crystallographic texture and electrochemical behavior for the Al-7075 alloy. J. appl. res. technol [online]. 2022, vol.20, n.3, pp.284-297.  Epub Feb 17, 2023. ISSN 2448-6736.  https://doi.org/10.22201/icat.24486736e.2022.20.3.1789.

Anti-corrosion susceptibility is one of the top criteria for selecting metallic materials for several industrial applications. This work studies the corrosion performance of an Al-7075 alloy obtained by repetitive corrugation and straightening (RCS). This processing method generated a microstructure formed by randomly distributed micro-, submicro-, and nano- metric grain sizes. The samples exhibited a drop in corrosion resistance for a longer duration in the electrolyte and higher deformation. However, the samples processed by RCS showed better electrochemical stability than the non-deformed condition. The improved electrochemical stability could be associated with the particular microstructure generated during the RCS process.

Keywords : Aluminum alloy; Texture; Electrochemical impedance spectroscopy; Microstructure; Corrosion; X-ray diffraction.

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