Heat Affected Zone

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Preferential Dissolution clear all

Heat Affected Zone — sub-branches

Heat Affected Zone 1

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Micrographic detail of the microstructure close to the corroded area showing the heat affected zone of the autogenous weld, with a refined grain size. The hardness level here is 202HV average, compared to the base metal that is 180HV average.
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ML00140 / May.2019
Preferential Corrosion of Pipe Seam Weld
M - Low Carbon SteelP - Longitudinal Seam Welded PipeAp - ShipCd - Preferential Dissolution
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone