Damage

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: Micrography by OM using A262 Method A Detail focus: 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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Through wall cracking in the longitudinal seam weld of the fitting. Several cracks, longitudinal to the weld, were created by the connection of voids in the weld metal, associated to a strong microstructural evolution.
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ML00061 / Apr.2017
Creep in a Seam Weld of a 304H SS Fitting
M - Austenitic Stainless SteelP - Fabrication WeldAp - Chemical IndustryCd - Creep
Cm - Micrography by OM using A262 Method ADf - Cracks