Sampling and Analysis

2 cases · 5 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Application: Structure Condition: Sound Capture method: Optical Microscope clear all

Sampling and Analysis — sub-branches

Heat Affected Zone 4Longitudinal Section 1

Results

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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
Micrography of a section transverse to the Oxygen Plasma Cut surface, showing the zone affected by the heat generated in the cutting. The extension of the HAZ is about 0.5 mm. The cut was conducted in the 1 1/4" thickness of the plate.
359
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone

More from these cases

ML00033 — Plasma Cut of 1 1/4" Steel PlateM - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Intercritical heating at 0.5 mm from the cut surface, showing martensitic islands.
32
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone
Intercritical heating at 0.5 mm from the cut surface, showing martensitic islands.
26
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone
Location of the microhardness tests. The three measurements at the plate base metal showed average hardness of 204 HV 50g. The three measurements of the martensitic structure at the surface showed average 454HV 50g. The intercritical region showed average 324 HV 50g.
25
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone