Ferritic pearlitic matrix

3 cases · 28 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: Nital Etched Micrography by OM clear all

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Micrography of the crankshaft at the surface, in the radio that is not heat treated. The microstructure is nodules of graphite in a ferritic and pearlitic matrix, predominantly pearlitic.
96
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - At the Surface
Micrography of CAP A, showing graphite in imperfect nodules and ferritic matrix.
481
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Graphite in Imperfect Nodules
Polished cross-section showing rounded graphite nodules within a ferritic matrix, bordered by an irregular oxidized region at the surface edge.
910
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Oxide Layer

More from these cases

ML00154 — High Strength Cast Iron CrankshaftM - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Micrography of the crankshaft close to the radio that is not heat treated. Graphite in nodules and a ferritic and pearlitic matrix, predominantly pearlitic.
81
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - Matrix of ferrite and pearlite
Micrographic detail of the graphite nodules and a ferritic and pearlitic matrix, predominantly pearlitic.
82
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - Matrix of ferrite and pearlite
Micrography of the shaft at the surface, in a heat treated position. Graphite in nodules. Dark blue martensitic microstructure around the nodules and white islands of martensitic with retained austenite microstructure (not clearly identified at this low magnification).
68
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - At the Surface
Micrography of the shaft very close to the surface, in a heat treated position. Graphite in nodules. Dark blue martensitic microstructure around the nodules, brown yellow martensite and white islands of martensitic with retained austenite microstructure.
65
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - Martensite
Micrographic detail of the graphite in nodules, dark blue martensitic microstructure around the nodules, brown yellow martensite and white yellow islands of martensitic with retained austenite microstructure.
61
VIEW
ML00154 / Jan.2019
High Strength Cast Iron Crankshaft
M - Nodular Cast IronP - CastingAp - EngineCd - Surface treatment
Cm - Nital Etched Micrography by OMDf - Martensite

+9 more from this case →

ML00047 — Ductile Cast Iron Caps of Electrical InsulatorsM - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Detail of CAP A microstructure. Graphite in imperfect nodules and ferritic matrix. Grey sulphide inclusions.
90
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic
Micrography of CAP B, showing graphite in nodules and ferritic matrix.
67
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Graphite in Nodules
Detail of CAP B microstructure. Graphite in nodules and ferritic matrix. Small sulphide inclusions (grey).
60
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic
Micrography of CAP C, showing graphite in nodules and ferritic-perlitic matrix.
52
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Graphite in Nodules
Detail of CAP C microstructure. Graphite in nodules and ferritic-perlitic matrix.
56
VIEW
ML00047 / Mar.2017
Ductile Cast Iron Caps of Electrical Insulators
M - Ductile Cast IronP - Cast iron capAp - EnergyCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic
ML00001 — Thermal Fatigue of Cast IronM - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
The 1" flat casting product presents a ferritic perlitic matrix and graphite nodules.
112
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Graphite in Nodules
Center of the flat casting product, presenting nodular graphite and ferritic perlitic matrix.
113
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Predominantly Ferritic Matrix
Nodular cast iron presenting a ferritic perlitic matrix.
109
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Matrix of ferrite and pearlite
Nodular cast iron. Ferritic perlitic matrix. White regions in the pearlite colonies are free carbides.
129
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Free Carbides in Pearlite Colonies
The graphite nodules remain at the surface and the matrix was consumed during high temperature exposition.
117
VIEW
ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Oxide Layer

+1 more from this case →