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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Cladding Capture method: Optical Microscope Detail focus: Martensite clear all

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Welding 3

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Micrographic detail of the tempered martensitic structure of the tubular 4130 forging butt weld HAZ (at the face). The martensite was formed during welding, not reheated (because it was the last bead in that position), and tempered during PWHT.
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ML00102 / May.2018
AISI 4130 Forging Welded and Overlaid
M - Low Alloy SteelP - CladdingAp - Oil and GasCd - Welding
Cm - Nital Etched Micrography by OMDf - Martensite