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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: A-1 Capture method: Scanning Electron Microscope Detail focus: Clad Interface clear all

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Removed From Service 1

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Image by scanning electron microscopy of the metallurgically bonded interface of the composite seamless tube (carbon steel externally claded with stainless steel), in the side of the stainless steel where a strain hardening effect plus a carbide precipitation in twins is shown. The hardness of this region (279 HV0.3) is a lot higher than the value obtained out of this region (167 HV0.3) for the same stainless steel.
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ML00056 / May.2018
Seamless Tube Externally Cladded with SS
M - Carbon Steel / Stainless SteelP - CladdingAp - Pulp and PaperCd - Removed From Service
Cm - Electrolytic Etch Micrography by SEMDf - Clad Interface