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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Large Grains Capture method: Optical Microscope Detail focus: Heat Affected Zone clear all

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Fusion line of the forging side, in the cap, showing the weld metal (to the top of the image) and the base metal (to the bottom of the image). The heat affected zone hardness is about 270HV10.

108

ML00178 / Jan.2022

Cold cracks in Cr-Mo Welded Forging

M - CrMo SteelP - ForgingAp - O&G Well DrillingCd - Welding Defect

Cm - Nital Etched Micrography by OMDf - Heat Affected Zone