ASTM

3 cases · 11 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Hydrogen Capture method: Fractography by SEM clear all

ASTM — sub-branches

A 1B 2F 1

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Aspect of the opened crack by scanning electron microscopy, showing the coarser structure in the weld (right side of the figure).
33
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Fracture
The fractographic aspect of the broken bolt shows intergranular micromechanism, typical of a hydrogen embrittlement condition for this aged martensitic material.
88
VIEW
ML00139 / Jun.2018
Hydrogen Fracture of a 17-4 PH Allen Bolt
M - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Intergranular Fracture
Fractographic aspect of the stud fracture surface, by scanning electron microscopy, close to the bottom of the thread fillet. In the center of the image it is possible to see secondary cracks with intergranular morphology.
59
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Brittle Fracture

More from these cases

ML00179 — Hydrides in Titanium WeldM - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
In the region where the fracture started there are brittle aspects resembling a cleavage micromechanism and several secondary cracks, transverse to the fracture surface, as well as propagation by fatigue (striation).
36
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Brittle Cracks
Fractography showing brittle secondaryy cracks in the region where the cracking was originated.
34
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Secondary Cracks
Fractography showing propagation by fatigue. Striation.
27
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Fatigue Striation
ML00139 — Hydrogen Fracture of a 17-4 PH Allen BoltM - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Fractographic aspect by scanning electron microscopy, close to the surface the broken bolt, presenting intergranular fracture micromechanism.
79
VIEW
ML00139 / Jun.2018
Hydrogen Fracture of a 17-4 PH Allen Bolt
M - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Intergranular Fracture
Microscopic detail of the intergranular fracture close to the bolt surface.
71
VIEW
ML00139 / Jun.2018
Hydrogen Fracture of a 17-4 PH Allen Bolt
M - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Intergranular Fracture
Fractographic aspect by scanning electron microscopy, in the center of the broken bolt, presenting transgranular fracture micromechanism.
45
VIEW
ML00139 / Jun.2018
Hydrogen Fracture of a 17-4 PH Allen Bolt
M - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Cleavage Facets
Fractographic detail of the transgranular fracture micromechanism, brittle.
43
VIEW
ML00139 / Jun.2018
Hydrogen Fracture of a 17-4 PH Allen Bolt
M - Precipitation Hardened Stainless SteelP - Allen BoltAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Cleavage Facets
ML00136 — Hydrogen Cracks of Subsea StudsM - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Fractographic detail by scanning electron microscopy of the secondary cracks with intergranular morphology.
47
VIEW
ML00136 / Jun.2018
Hydrogen Cracks of Subsea Studs
M - Low Alloy Medium Carbon QTP - FastenerAp - SubseaCd - Hydrogen Embrittlement
Cm - Fractography by SEMDf - Secondary Cracks