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Micrography by OM

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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TryML00122 corrosion ML00011 brittle fracture ductile behavior fatigue hydrogen fracture embrittlement stress corrosion

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Multiple intergranular cracks transverse to the bolt axis. Hydrogen assisted cracking due to cathodic protection of a high strenght steel. Micrography in the "as polished" condition.

472

ML00073 / Jun.2018

Hydrogen Cracking of a LAS Subsea Fastener

M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement

Cm - Micrography by OMDf - Intergranular Cracking

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