Fractography by SEM

2 cases · 8 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Brittle Behavior Standard: AISI clear all

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Fractographic image of the actual rod rupture, showing that the material fractured by an intergranular micromechanism, evidencing a tempered martensite embrittlement.
59
VIEW
ML00182 / Jul.2022
Brittle Fracture of a LAS Fixing Rod
M - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Cm - Fractography by SEMDf - Intergranular Fracture
Detail of the pin fracture surface, presenting both a flat aspect and a rough aspect in a shearing section of 2.5 mm width.
726
VIEW
ML00046 / Jan.2018
Brittle Fracture of SS Shear Pin
M - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Intergranular Cracking
Cm - Fractography by SEMDf - Fracture

More from these cases

ML00182 — Brittle Fracture of a LAS Fixing RodM - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Fractographic detail of the intergranular micromechanism, evidencing a tempered martensite embrittlement.
49
VIEW
ML00182 / Jul.2022
Brittle Fracture of a LAS Fixing Rod
M - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Cm - Fractography by SEMDf - Intergranular Fracture
Fractographic detail of the intergranular micromechanism, evidencing a tempered martensite embrittlement.
44
VIEW
ML00182 / Jul.2022
Brittle Fracture of a LAS Fixing Rod
M - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Cm - Fractography by SEMDf - Intergranular Fracture
Broken tensile testpiece fractography showing predominantly dimples as the fracture micromechanism, and some integranular aspects. It shows that in this uniaxial and without stress concentration raisers, the material presented a ductile behavior.
30
VIEW
ML00182 / Jul.2022
Brittle Fracture of a LAS Fixing Rod
M - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Cm - Fractography by SEMDf - Broken Testpiece
Broken Charpy V testpiece fractography showing intergranular fracture micromechanism. It reveals the brittle material behavior when under critical conditions, like the one that was present in the service application (with a triaxial condition in the notch).
26
VIEW
ML00182 / Jul.2022
Brittle Fracture of a LAS Fixing Rod
M - Low Alloy Medium Carbon QTP - StemAp - Mechanical IndustryCd - Brittle Fracture
Cm - Fractography by SEMDf - Broken Testpiece
ML00046 — Brittle Fracture of SS Shear PinM - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Intergranular Cracking
Fracture appearance in a sheared region, presenting a ductile morphology for the fracture micromechanism.
109
VIEW
ML00046 / Jan.2018
Brittle Fracture of SS Shear Pin
M - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Intergranular Cracking
Cm - Fractography by SEMDf - Ductile Fracture
Fracture appearance in a brittle region, presenting an intergranular morphology.
93
VIEW
ML00046 / Jan.2018
Brittle Fracture of SS Shear Pin
M - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Intergranular Cracking
Cm - Fractography by SEMDf - Intergranular Cracking