Ductile Fracture

2 cases · 4 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Corrosion clear all

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Macrography of one wire that was overloaded, showing localized necking and large plastic deformation close to the fracture. This kind of fracture occurred for about 25% of the broken wires.
50
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - NItal Etched MacroDf - Ductile Fracture
Micrographic detail of the pin in a longitudinal section, transverse to the fracture surface, at the ductile final fracture, presenting microvoids connecting with plastic deformation of the structure.
41
VIEW
ML00085 / Nov.2017
Corrosion Fatigue of a Martensitic SS Pin
M - Martensitic Stainless SteelP - Forged PinAp - O&G Well DrillingCd - Corrosion Fatigue
Cm - Kalling Etched Micrography by OMDf - Ductile Fracture

More from these cases

ML00155 — Failure of a Prestressed Concrete Steel StrandM - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Micrography of a typical overloaded wire, in a longitudinal section, showing plastic deformation and necking at the fracture. About 25% of the wires have ruptured by this ductile mechanism.
34
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 - Ductile Fracture
Micrography of a typical as polished overloaded wire, in a longitudinal section, showing necking at the fracture and secondary ductile cracks. About 25% of the wires have ruptured by this ductile mechanism.
35
VIEW
ML00155 / Jan.2020
Failure of a Prestressed Concrete Steel Strand
M - High Carbon SteelP - Wire RopeAp - StructureCd - Corrosion Fatigue
Cm - As polished micrographyDf - Ductile Fracture