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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: API Capture method: Optical Microscope Detail focus: Crack clear all

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Micrography of a longitudinal section of the pipe, at the external pipe surface, where there is a crack propagating from the corroded spot. The microstructure is tempered martensite and at the surface the pipe is slightly decarburized.
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ML00169 / Nov.2020
Drill Pipe Fracture in the Pipe Body
M - Low Alloy Medium Carbon QTP - Drill PipeAp - O&G Well DrillingCd - Corrosion Fatigue
Cm - Nital Etched Micrography by OMDf - Crack