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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Application: Ship Capture method: Optical Microscope Detail focus: Internal Surface clear all

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Micrography of the longitudinal section of the cast sleeve, close to the internal diameter (ID). The microstructure is coarse, austenitic ferritic, and presents the same microstructure, ferritic and austenitic, all through the thickness.
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ML00147 / Aug.2018
WC Layer Detached from a Cast Lean Duplex
M - Lean Duplex Stainless SteelP - Centrifugal CastingAp - ShipCd - Lack of Sealing
Cm - NaOH Electrolytic Etched MicroDf - Internal Surface