Fig 5.1 Stress Corrosion Cracking

TM 5-5420-279-23

Fig 5.1 Stress Corrosion Cracking

(2) Bi-metallic Corrosion. This generally occurs on aluminum alloy components in contact

with steel fastenings where the protective finish has been damaged (Fig 5.2).

Fig 5.2 Bi-Metallic Corrosion

(3) Exfoliation (or layer) Corrosion. This is a less common form of corrosion occurring in

alloys with copper or magnesium content. It is often the cause of flaking paintwork (Fig 5.3).

Fig 5.3 Exfoliation Corrosion

Change 1 5-5