Microstructure

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Damage Standard: UNS Capture method: Micrography by OM using A262 Method A clear all

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Aged Martensite 5Alpha 5Alpha & Beta 2Anisotropy 2Austenite 19Austenitic Matrix 1Austeno ferritic 5Bainite 3Biphasic 1Coarse Structure 2Coating Layer 3Deformed Structure 1Dendritic 3Detrimental phases 3Duplex Ferritic Austenitic 7Equiaxial Grains 2Ferritic 5Ferritic Bainitic 2Ferritic matrix 1Ferritic pearlitic 6Ferritic pearlitic matrix 1Fine Transgranular Precipitation 1Free from Carbides 2Grain Boundary Carbide Precipitation 2Granular 6Graphite in nodules 2Heterogeneous granulometry 1Hypoeutectic 1Large amount of inclusions 1Local Melting 1Martensite 4Martensite and Carbides 1Martensite and Retained Austenite 1Martensitic with Delta Ferrite 1Monophasic 3Needles 1Network of Primary Carbides 1Networlike Precipitates 1Pb Inclusions 1Pearlitic 2Precipitation Hardened 3Refined ferritic 3Secondary carbides 2Segregation Bands 4Small Amount of Delta Phase 2Small amount of delta ferrite 1Strain Hardened 5Sulfide Inclusions 1Surface layer of Thermal Spray 3Tempered Martensite 10Zinc Layer 1