Damage

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Fitting Standard: 2507 Capture method: Fractography by SEM clear all

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The through wall cracking was opened by citting the two sides and the aspect was characterized by SEM. Although there was a film at the fracture surface, probably because the fitting was removed from service some time after it was leaking, the fracture micromechanism is by quasecleavage, typical of a stress corrosion cracking.

56

ML00094 / Sep.2017

MIC of a Subsea Hydraulic Line

M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Brittle Behavior

Cm - Fractography by SEMDf - Transgranular Fracture