Intergrannular corrosion in structural aluminium alloy parts
- are not likely to occur in parts fabricated from heat-treated sheet aluminium.
- may be detected by the white, powdery deposit formed on the surface of the metal.
- cannot always be detected by surface indications.
Explanation
Because intergranular corrosion runs along internal grain boundaries, it can be well advanced before any sign reaches the surface, so it cannot always be detected by surface indications. It is not confined away from heat-treated sheet, and a white powdery deposit is typical of surface corrosion rather than the hidden intergranular form.
bhusan66 asking:
Intergrannular corrosion cannot be observed by visual inspection isn't it? Intergrannular corrosion are microscopic corrosion due to improper heating?
Community Comments (1)
D
dimky Posts: 514 06.10.2013 / 14:16
Hey!
You right. Corrected.
You right. Corrected.
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