Damage

2 cases · 6 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Application: Piping Capture method: Fractography by SEM clear all

Damage — sub-branches

Corrosion 2Fabrication Defect 1Fatigue 1Hydrogen 1

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The fracture surface, although presenting a large amount of corrosion products, shows also evidences of a brittle behavior with regions of cleavage micromechanism.
116
VIEW
ML00002 / Jan.2018
Preferential Dissolution and Cracks in SDSS
M - Super Duplex Stainless SteelP - Fabrication WeldAp - PipingCd - Preferential Dissolution
Cm - Fractography by SEMDf - Cleavage Facets
The fracture surface of the main pipe is presented in low magnification (external pipe surface in the top) showing a flat propagation starting from the contour of the weld margin.
173
VIEW
ML00006 / Apr.2017
Vibration Induced Fatigue in 304SS
M - Austenitic Stainless SteelP - Longitudinal Seam Welded PipeAp - PipingCd - Vibration Induced Fatigue
Cm - Fractography by SEMDf - Margin of the Weld Crack

More from these cases

ML00002 — Preferential Dissolution and Cracks in SDSSM - Super Duplex Stainless SteelP - Fabrication WeldAp - PipingCd - Preferential Dissolution
Fracture surface of the broken Charpy V testpiece, tested at ambient temperature and presenting only 10J average energy. The brittle fracture presented cleavage facets associated to the detrimental phases in the ferrite network.
84
VIEW
ML00002 / Jan.2018
Preferential Dissolution and Cracks in SDSS
M - Super Duplex Stainless SteelP - Fabrication WeldAp - PipingCd - Preferential Dissolution
Cm - Fractography by SEMDf - Cleavage Facets
Detail of the fracture surface of the broken Charpy V testpiece, tested at ambient temperature and presenting only 10J average energy. The brittle fracture presented cleavage facets associated to the detrimental phases in the ferrite network.
89
VIEW
ML00002 / Jan.2018
Preferential Dissolution and Cracks in SDSS
M - Super Duplex Stainless SteelP - Fabrication WeldAp - PipingCd - Preferential Dissolution
Cm - Fractography by SEMDf - Cleavage Facets
ML00006 — Vibration Induced Fatigue in 304SSM - Austenitic Stainless SteelP - Longitudinal Seam Welded PipeAp - PipingCd - Vibration Induced Fatigue
Fracture surface micromechanism by striation, evidence of FATIGUE.
158
VIEW
ML00006 / Apr.2017
Vibration Induced Fatigue in 304SS
M - Austenitic Stainless SteelP - Longitudinal Seam Welded PipeAp - PipingCd - Vibration Induced Fatigue
Cm - Fractography by SEMDf - Fatigue Striation
Fracture surface micromechanism by striation, evidence of FATIGUE.
147
VIEW
ML00006 / Apr.2017
Vibration Induced Fatigue in 304SS
M - Austenitic Stainless SteelP - Longitudinal Seam Welded PipeAp - PipingCd - Vibration Induced Fatigue
Cm - Fractography by SEMDf - Fatigue Striation