exfoliation corrosion

It is susceptible to exfoliation corrosion when held at temperatures above 65C (150F) for extended periods of time.

Artificially accelerated exfoliation corrosion sites around fasteners have been generated in support of a research project at the NRC Industrial Materials Institute and the Advanced Vehicle Research Section of DND.

High strength aluminium alloys, especially when extruded or otherwise subjected to high degree of working, can undergo exfoliation corrosion, where the corrosion products build up between the flat, elongated grains and separate them, resulting in lifting or leafing effect and often propagating from edges of the material through its entire structure.