Stress corrosion cracking of an austenitic stainless steel

Achilles’heel of austenitic stainless steel is stress corrosion cracking. This steel family, born to sove any problem in corrosion is particularly susceptible to SCC in mildly  aggressive chloride environments. In the image the typical aspect of a SCC crack. It propagates normal to the applied stress (in this case residual welding stress), but highly branched. In the studied case, propagation is transgranular.

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