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3 cases · 30 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Tube Condition: Sound Capture method: Optical Microscope clear all

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Micrography of the tubing fusion line. The welding was conducted in two passes. The average hardness at the heat affected zone of the tubing is 257 HV5.
825
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - Fusion Line Left Side
Micrographic detail of the slightly banded perlitic structure, in the center of the thickness. ND 3". 7.6 mm thick.
531
VIEW
ML00090 / Sep.2017
Carbon Steel Tubing for Structural Application
M - Low Carbon SteelP - TubeAp - StructureCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Transverse section of the 1/16" thick tube at the autogenous seam weld.
588
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Autogenous Weld

More from these cases

ML00100 — Superduplex Tubing to Forging Welded JointM - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Micrography of the tubing heat affected zone.
69
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - HAZ Left Side
Micrography of the tubing heat affected zone.
68
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - HAZ Left Side
Low magnification micrography of the superduplex stainless steel tubing (base metal), in the longitudinal direction. Refined ferritic-austenitic structure. The average hardness in the section is 264HV5.
58
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - Base Metal Left Side
Micrography of the superduplex stainless steel tubing (base metal), in the longitudinal direction. Refined ferritic-austenitic structure.
55
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - Duplex structure
Micrographic detail of the superduplex stainless steel tubing (base metal), in the longitudinal direction. Refined ferritic-austenitic structure.
53
VIEW
ML00100 / Nov.2017
Superduplex Tubing to Forging Welded Joint
M - Super Duplex Stainless SteelP - Fabrication WeldAp - SubseaCd - Welding
Cm - NaOH Electrolytic Etched MicroDf - Duplex structure

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ML00090 — Carbon Steel Tubing for Structural ApplicationM - Low Carbon SteelP - TubeAp - StructureCd - Typical manufacturing
Micrography of a longitudinal section of the tube, in the center of the thickness. ND 3". 7.6 mm thick.
55
VIEW
ML00090 / Sep.2017
Carbon Steel Tubing for Structural Application
M - Low Carbon SteelP - TubeAp - StructureCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrography of a longitudinal section of the tube, in the center of the thickness. ND 3". 7.6 mm thick.
43
VIEW
ML00090 / Sep.2017
Carbon Steel Tubing for Structural Application
M - Low Carbon SteelP - TubeAp - StructureCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Longitudinal Section
ML00026 — Autogenous Seam Welded Tube in Ferritic SSM - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Equiaxial grains of a ferritic structure, in a longitudinal section of the tube.
97
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Longitudinal Section
Equiaxial grains of a ferritic structure, in a longitudinal section of the tube.
68
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Equiaxial Grains
Equiaxial grains of a ferritic structure, in a longitudinal section of the tube.
49
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Ferrite
Equiaxial grains of a ferritic structure, in a transverse section of the tube.
40
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Transverse Section
Equiaxial grains of a ferritic structure, in a transverse section of the tube.
36
VIEW
ML00026 / Feb.2017
Autogenous Seam Welded Tube in Ferritic SS
M - Ferritic Stainless SteelP - Fabrication WeldAp - AutomotiveCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - Equiaxial Grains

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