Damage

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: 316 Capture method: Surface Aspect clear all

Damage — sub-branches

Corrosion 2 Fatigue 1

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Low magnification microscope image showing the aspect of the thread close to the fracture surface. Looks like a wear or strong corrosion, but in fact the threads were removed because they were cracked, as can be seen in the next figures.

67

ML00157 / Feb.2020

Bolts Under Chloride SCC Conditions

M - Austenitic Stainless SteelP - BoltAp - Oil and GasCd - Stress Corrosion

Cm - Surface AspectDf - Low Mag