Damage

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: As polished micrography Detail focus: Parallel cracks clear all

Damage — sub-branches

Brittle Behavior 12Corrosion 39Ductile Behavior 5Fabrication Defect 20Fatigue 12High Temperature 9Hydrogen 17Lack of Sealing 1Repair Defect 1Shooting Effect 4Wear 3

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The internal side of the tube presented multiple cracks, filled with oxides, blunt-tipped, typical of a corrosion fatigue cracking mechanism.
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ML00163 / Jun.2020
Corrosion Fatigue of a Boiler Waterwall Tube
M - Low Carbon SteelP - Seamless tubeAp - BoilerCd - Corrosion Fatigue
Cm - As polished micrographyDf - Parallel cracks