Optical Microscope

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Damage Microstructure: Alpha & Beta Detail focus: Crack clear all

Optical Microscope — sub-branches

As polished micrography 1

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Micrography showing detachment of material at the surface of the platesheet. The cracks are associated to the dezincification effect, where the beta phase was preferentially corroded and became a weak porous layer.
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ML00125 / Mar.2018
Dezincification of a Cooler Tubesheet
M - BrassP - PlateAp - ShipCd - Preferential Dissolution
Cm - As polished micrographyDf - Crack