Microstructure

162 cases · 600 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: Optical Microscope clear all

Microstructure — sub-branches

Acicular Alpha 2Acicular Ferrite 1Aligned particles 2Alpha 4Alpha and Beta 12Austenite 45Austenitic with Primary Carbides 2Austenitic with Secondary Precipitation 7Bainite 15Bainitic Ferrite 7Bainitic HAZ 8Bainitic Martensitic 6Banded Pearlite 8Banded Structure 25Carburized Layer 4Clad Interface 21Coalesced structure 8Coarse Structure 15Coating Layer 9Columnar Grains 4Decarburized Surface 1Delta Ferrite Islands 2Delta ferrite 4Dendritic 3Dual grain sizes 1Duplex structure 18Equiaxial Grains 5Ferrite 8Ferrite and Austenite 7Ferrite and Bainite 3Ferrite and Pearlite 55Ferritic Weld Metal 2Free Carbides in Pearlite Colonies 1Fusion Line 17Grain boundary intermetallics 2Grain refined structure 13Granular structure 9Graphite Type A (ASTM A247) 2Graphite in Flakes 5Graphite in Imperfect Nodules 1Graphite in Nodules 6Hard Chromium Layer 3Hypoeutetic 1Intergranular Precipitation 4Intragranular Secondary Precipitation 5Martensite 89Martensite, delta ferrite & carbides 3Matrix of ferrite and pearlite 5Mixture of Melted Metals 3Network of Primary Carbides 2Networklike precipitates 1Ni layer 2No Coating Layer 3Non Metallic Inclusions 8Overheating 3Overtempered Structure 2Pearlite 10Pearlite Matrix 3Predominantly Ferritic 15Predominantly Pearlitic 5Prior Austenite Boundaries Decorated 1Secondary Precipitation 1Sigma 7Single phase 1Strain Hardened 25Strain hardened pearlite 4Tempered Martensite 4Tempered Structure 1Thermal Spray Layer 5Two phases 4Uniform Structure 4Zn Layer 6

Results

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Ferritic perlitic microstructure, banded, in the center of the 1" thick C-Mn plate. Refined Structure.
296
VIEW
ML00025 / Dec.2017
1" CMn Steel Plate for Pressure Vessel
M - CMn SteelP - PlateAp - Oil and GasCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Grain refined structure
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

More from these cases

ML00025 — 1" CMn Steel Plate for Pressure VesselM - CMn SteelP - PlateAp - Oil and GasCd - Typical manufacturing
Ferritic perlitic microstructure, banded, in the center of the 1" thick C-Mn plate. Refined Structure.
15
VIEW
ML00025 / Dec.2017
1" CMn Steel Plate for Pressure Vessel
M - CMn SteelP - PlateAp - Oil and GasCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Banded Pearlite
ML00001 — Thermal Fatigue of Cast IronM - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
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