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Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Casting Microstructure: Zinc Layer Capture method: Aspect Before Analysis clear all

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Aspect of the fracture surface of the 2" diameter casting. The fracture appeared flat, with secondary cracks, and the position of the fracture during the loading test is located in the region that was in tensile stress during the hot dip galvanized process (the part was sustaining its own weight during the zinc hot dip bath).
801
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ML00138 / Jun.2018
Liquid Metal Embrittlement of a HSLA Steel
M - High Strength Low AlloyP - Coated ProductAp - Mechanical IndustryCd - Liquid Metal Embrittlement
Cm - Aspect Before AnalysisDf - Brittle Fracture

More from these cases

ML00138 — Liquid Metal Embrittlement of a HSLA SteelM - High Strength Low AlloyP - Coated ProductAp - Mechanical IndustryCd - Liquid Metal Embrittlement
Aspect of the other side of the fracture of the 2" diameter lifting device. It failed in a brittle way during loading test. The zinc coating was partially removed from the casting surface of one side of the failed part, for inspection, looking for casting defects. The results showed that the casting part did not present casting defects.
92
VIEW
ML00138 / Jun.2018
Liquid Metal Embrittlement of a HSLA Steel
M - High Strength Low AlloyP - Coated ProductAp - Mechanical IndustryCd - Liquid Metal Embrittlement
Cm - Aspect Before AnalysisDf - Fracture