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

International audienceThe corrosion behaviour of AA 1370 in different metallurgical states was studied in chloride-containing sulphatesolutions. The microstructures of a rod, a deformed strand and an annealed strand constitutive of wires wereexamined using scanning electron microscopy, transmission electron microscopy and electron backscattereddiffraction. Results offered evidence for the ultra-fine grain size, high density of interfaces and high level ofmisorientation of the interfaces as relevant explanations for the low corrosion resistance of the deformed strandcompared to the rod and the annealed strand