Intergranular Cracking

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Intergranular Cracking Microstructure: Large Grains Capture method: Optical Microscope clear all

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The cracking from the refrigeration hole presents an intergranular morphology, as shown in the micrography of a transverse section of the blade.
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ML00042 / Apr.2017
Gas Turbine Blade IN 939, Coated
M - NiCrCo AlloyP - CastAp - Gas TurbineCd - Intergranular Cracking
Cm - H2SO4+HNO3+H3PO4 Etched MicroDf - Intergranular Cracking