Microstructure
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Crevice Corrosion in a Subsea System — Aspect Before Analysis
Condition: Damage ×Capture method: Micrography by OM using A262 Method A ×Detail focus: Microstructure ×clear all
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Acicular Ferrite 1Aged Martensite 5Alpha 6Alpha & Beta 2Anisotropy 2Austenite 26Austenitic Matrix 1Austeno ferritic 6Bainite 8Bainitic Martensitic 2Biphasic 1Carburized Layer 3Coarse Precipitation at Grain Boundaries 2Coarse Structure 3Coating Layer 5Columnar Grains 2Deformed Structure 2Degradated 2Dendritic 3Detrimental phases 3Duplex Ferritic Austenitic 8Equiaxial Grains 2Ferrite and Carbides 2Ferritic 7Ferritic Bainitic 8Ferritic matrix 3Ferritic pearlitic 20Ferritic pearlitic matrix 1Fine Transgranular Precipitation 2Free from Carbides 2Grain Boundary Carbide Precipitation 2Granular 8Graphite in flakes 3Graphite in nodules 2Heterogeneous granulometry 1Hypoeutectic 1Intragranular Intergranular Precipitates 1Large Grains 2Large amount of inclusions 1Local Melting 1Martensite 12Martensite and Carbides 2Martensite and Retained Austenite 3Martensitic with Delta Ferrite 1Monophasic 3Needles 1Network of Primary Carbides 3Networlike Precipitates 1Pb Inclusions 1Pearlitic 3Pearlitic Matrix 2Precipitation Hardened 3Primary carbides 2Refined ferritic 3Secondary carbides 6Segregation Bands 9Segregation Islands 1Small Amount of Delta Phase 2Small amount of delta ferrite 2Strain Hardened 8Sulfide Inclusions 1Surface Layer of Hard Chromium 1Surface layer of Thermal Spray 3Tempered Martensite 26Zinc Layer 2