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1 case · 6 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: 4340 Capture method: Scanning Electron Microscope clear all

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The microscopic aspect of the internal side of the housing evidences the characteristics of the multiple cracks, not directly related to pitting corrosion.
41
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Surface Aspect by SEMDf - Cracks

More from these cases

ML00093 — MIC of a Drilling ToolM - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Details of the pitting corrosion at the internal surface. There are cracks inside some pits.
31
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Surface Aspect by SEMDf - Pitting
The fracture micromechanism is intergranular in the region where the failure has iniciated.
22
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Fractography by SEMDf - Intergranular Fracture
Fractographic detail by SEM of the intergranular micromechanism in the region where the failure has iniciated.
25
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Fractography by SEMDf - Intergranular Fracture
The fracture micromechanism is transgranular by quasecleavage in the region where the failure has propagated.
21
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Fractography by SEMDf - Transgranular Fracture
Fractographic detail by SEM of the transgranular micromechanism by quasecleavage in the region where the failure has propagated.
21
VIEW
ML00093 / Sep.2017
MIC of a Drilling Tool
M - Low Alloy Medium Carbon QTP - Heat Treated PartAp - O&G Well DrillingCd - Brittle Behavior
Cm - Fractography by SEMDf - Transgranular Fracture