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Micrography by OM

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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TryML00137 corrosion ML00164 brittle fracture ductile behavior fatigue hydrogen fracture embrittlement stress corrosion

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Atlas / Capture method / Optical Microscope / Micrography by OM

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Micrography of a longitudinal section of the bolt at the fracture surface. The material showed several creep voids and interconnected cracks. The broken bolt remained in service during some time and the fracture surface presented a thick oxide layer(grey). As polished.

529

ML00004 / Jun.2018

Creep in High Temperature Bolts

M - CrMo SteelP - FastenerAp - Gas TurbineCd - Creep

Cm - Micrography by OMDf - Oxide Layer

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