AISI

4 cases · 4 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Damage Capture method: Surface Aspect clear all

AISI — sub-branches

1020 11045 1304 1310 1316 3347 Nb stabilized 1410 24130 34140 3420 24330V 14340 24820 16150 28620 1D2 1Dual grade 316/316L 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
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ML00157 / Feb.2020
Bolts Under Chloride SCC Conditions
M - Austenitic Stainless SteelP - BoltAp - Oil and GasCd - Stress Corrosion
Cm - Surface AspectDf - Low Mag
Detailed aspect of the cracks in the internal diameter surface, where the hardness level was too low. These are typical overloading cracks.
76
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ML00131 / Apr.2018
Brittle Failure of a Soft Roller Bearing
M - Wear Resistant SteelP - Roller BearingAp - Mechanical IndustryCd - Heat Treatment Defect
Cm - Surface AspectDf - Cracks
The macroscopic aspect of the surface after preparation. Grinding and polishing.
50
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ML00092 / Sep.2017
MIC of a Valve Body
M - Martensitic Stainless SteelP - Valve BodyAp - Oil and GasCd - Brittle Behavior
Cm - Surface AspectDf - Localized Corrosion
Detail of the rusted surface of the knife, before cleaning.
340
VIEW
ML00054 / Dec.2018
Cutlery Corrosion
M - Martensitic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Pitting Corrosion
Cm - Surface AspectDf - Corrosion