Corrosion behaviour of AA 1370 strands for wires: Identification of the critical metallurgical parameters

Abstract

The corrosion behaviour of AA 1370 in different metallurgical states was studied in chloride-containing sulphate solutions. The microstructures of a rod, a deformed strand and an annealed strand constitutive of wires were examined using scanning electron microscopy, transmission electron microscopy and electron backscattered diffraction. Results offered evidence for the ultra-fine grain size, high density of interfaces and high level of misorientation of the interfaces as relevant explanations for the low corrosion resistance of the deformed strand compared to the rod and the annealed strand.

Archives of Metallurgy and Materials

“…it leads to the dissolving of aluminum, but there was no noticed relation between Fe-rich intermetallic particles size or distribution and corrosion rate. after metal rework, higher corrosion susceptibility was observed due to smaller grain size, higher misorientation level, and higher grain boundaries density [33]. in the paper of R. Gravina et al focused on corrosion properties of aa1370 as prepared cable and strands [34].…”