Thermal Fatigue

2 cases · 2 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Standard: ASTM Capture method: NItal Etched Macro clear all

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The macrography of a longitudinal section of the tube in the damaged area shows the circunferential cracks, from the internal and external sides of the tube. The outer diameter of the tube is in the top of the figure and the inner diameter is in the bottom of the figure. From the outside there are several paralel cracks, as well as from the inner side.
126
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ML00104 / Dec.2017
Thermal Fatigue of a Boiler Tube
M - Low Carbon SteelP - Autogenously Welded TubeAp - BoilerCd - Thermal Fatigue
Cm - NItal Etched MacroDf - Cracks
Detail of figure 2, showing multiple fatigue cracks due to thermal cycles.
136
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ML00001 / Dec.2017
Thermal Fatigue of Cast Iron
M - Nodular Cast IronP - CastAp - SiderurgyCd - Thermal Fatigue
Cm - NItal Etched MacroDf - Cracks Transverse to the Surface