Ferrous Alloys

2 cases · 2 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Fabrication Weld Detail focus: Multiple cracks clear all

Ferrous Alloys — sub-branches

Carbon Steel 2High Alloy Steel 11Low Alloy Steel 2

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The circumferential welds presented several regions where the multiple cracks appeared, mainly revealed by dye check test.
49
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ML00174 / Jul.2021
Carburization of a 347 SS Welded Joint
M - Austenitic Stainless SteelP - Fabrication WeldAp - EnergyCd - Carburization
Cm - Aspect by NDTDf - Multiple cracks
Micrography of the cracking surface, presenting multiple cracks from the edge of the tube, typical of fatigue induced by stresses generated by differential expansion of the pipe in relation to the tubesheet, due to thermal cycles.
71
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ML00119 / Feb.2018
Thermal Fatigue of a Marine Boiler
M - Low Carbon SteelP - Fabrication WeldAp - ShipCd - Thermal Fatigue
Cm - Nital Etched Micrography by OMDf - Multiple cracks