As polished micrography

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Stud clear all

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As polished micrography of the bottom of the thread fillet, where a cracking is still closed, showing the microscopical morphology of the cracking.
40
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Cracking

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ML00136 — Hydrogen Cracks of Subsea StudsM - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
As polished micrographical detail of the cracks at the bottom of the thread fillet. There are several small cracks some of them associated to longitudinal inclusions. There are some regions presenting small "pores".
40
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Crack
As polished micrography of the longitudinal section of the stud at the cracking transverse to the axis. It looks like inclusions/possible banding regions are contributing for the cracking.
38
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Crack
As polished micrography of the longitudinal section of the stud at the cracking transverse to the axis. It looks like inclusions/possible banding regions are contributing for the cracking.
37
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Secondary Cracks
As polished micrography of the longitudinal section of the stud at the cracking transverse to the axis. It looks like inclusions/possible banding regions are contributing for the cracking.
35
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Cracks
As polished micrography of the longitudinal section of the stud at the cracking transverse to the axis. It looks like inclusions/possible banding regions are contributing for the cracking.
33
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - As polished micrographyDf - Cracks

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