How to effectively detect pipes with intergranular corrosion
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What effective non-destructive testing methods can be used to detect pipes with a tendency to intergranular corrosion? Have any friends encountered this problem?
Generally, austenitic stainless steels are prone to intergranular corrosion after sensitization; this corrosion manifests as microscopic cracks, which can be effectively detected using microscopic metallography.
It is generally difficult to open existing pipelines, and it is somewhat challenging to conduct metallographic analysis on them.