Hydrogen

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Coating Layer Capture method: Optical Microscope Detail focus: Rolled Thread clear all

Hydrogen — sub-branches

Hydrogen Embrittlement 2

Results

SortNewest Oldest Title A-Z Title Z-A

Micrography of the longitudinal section of the bolt at the top of the thread fillet, showing a small circunferential cracking typically of a rolling process to manufacture the thread. The thread presented no evidences of plastic deformation suggesting that the heat treatment was applied later. It is important to mention that this cracking presented no influence in the fracture of the bolt.

101

ML00126 / Mar.2018

Hydrogen Fracture of Subsea Allen Bolts

M - Low Alloy Medium Carbon QTP - Coated ProductAp - SubseaCd - Hydrogen Embrittlement

Cm - Nital Etched Micrography by OMDf - Rolled Thread