Microstructure

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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Acicular Ferrite 1Aged Martensite 1Alpha 4Alpha & Beta 2Anisotropy 2Austenite 14Austeno ferritic 3Bainite 6Bainitic Martensitic 1Biphasic 1Carburized Layer 2Coarse Precipitation at Grain Boundaries 2Coarse Structure 1Coating Layer 3Columnar Grains 2Deformed Structure 2Degradated 2Dendritic 2Detrimental phases 2Duplex Ferritic Austenitic 4Ferrite and Carbides 1Ferritic 2Ferritic Bainitic 6Ferritic matrix 3Ferritic pearlitic 13Ferritic pearlitic matrix 1Fine Transgranular Precipitation 2Free from Carbides 1Grain Boundary Carbide Precipitation 2Granular 8Graphite in flakes 3Graphite in nodules 2Heterogeneous granulometry 1Hypoeutectic 1Large Grains 2Large amount of inclusions 1Martensite 2Martensite and Retained Austenite 1Martensitic with Delta Ferrite 1Monophasic 2Needles 1Network of Primary Carbides 2Networlike Precipitates 1Pb Inclusions 1Pearlitic 1Pearlitic Matrix 2Precipitation Hardened 2Primary carbides 2Refined ferritic 1Secondary carbides 4Segregation Bands 3Segregation Islands 1Small Amount of Delta Phase 2Small amount of delta ferrite 2Strain Hardened 4Sulfide Inclusions 1Surface Layer of Hard Chromium 1Surface layer of Thermal Spray 1Tempered Martensite 11Zinc Layer 1