Damage

2 cases · 14 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Strain Hardened Detail focus: Corrosion clear all

Damage — sub-branches

Corrosion 3Ductile Behavior 1Hydrogen 1Shooting Effect 2Wear 1

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Macrography of a typical corroded wire in a longitudinal section, showing loss of thickness by corrosion.
75
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - NItal Etched MacroDf - Corrosion
Detailed aspect of the corroded region in the external side of the drilling tool, after cleaning .
85
VIEW
ML00135 / May.2018
MIC of a Non Magnetic Drilling Tool
M - High Mn Austenitic SteelP - Tubular ForgingAp - O&G Well DrillingCd - Pitting Corrosion
Cm - Aspect Before AnalysisDf - Corrosion

More from these cases

ML00155 — Failure of a Prestressed Concrete Steel StrandM - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Micrography of a typical corroded wire, in a longitudinal section, showing loss of thickness by corrosion. The microstructure of the wire is predominantly pearlitic and the wire presents no coating, in any region.
54
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - Nital Etched Micrography by OMDf - Corrosion
Micrography of a typical corroded wire, in a longitudinal section as polished, showing loss of thickness by corrosion. The loss of material is accelerated by the corrosion in "layers" associated to the strained microstructure.
43
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - As polishedDf - Corrosion
Macro view of individual strand wires emerging from the anchorage fitting, most surfaces covered in reddish-brown corrosion product and several wire ends showing fracture.
4
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - Aspect Before AnalysisDf - Corrosion
Cross-section at the wire surface showing a deep corrosion pit with branching attack adjacent to the longitudinally drawn metal texture.
4
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - Aspect Before AnalysisDf - Corrosion
Cross-sectional view of a wire showing irregular corrosion pits penetrating inward from both surfaces.
4
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - Aspect Before AnalysisDf - Corrosion

+6 more from this case →

ML00135 — MIC of a Non Magnetic Drilling ToolM - High Mn Austenitic SteelP - Tubular ForgingAp - O&G Well DrillingCd - Pitting Corrosion
Aspect of the internal side of the drilling tool, after cleaning for inspection. Several regions of corrosion where detected where the drilling mud was adhered and remained for a period a little longer than 1 month. This tool is a high strength steel, cold worked.
48
VIEW
ML00135 / May.2018
MIC of a Non Magnetic Drilling Tool
M - High Mn Austenitic SteelP - Tubular ForgingAp - O&G Well DrillingCd - Pitting Corrosion
Cm - Aspect Before AnalysisDf - Corrosion