Optical Microscope

1 case · 1 image

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Granular Standard: API Detail focus: Grain refined structure clear all

Optical Microscope — sub-branches

Oxalic Acid Electrolytic Etch 1

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Image by scanning electron microscopy of the metallurgically bonded interface of the internally cladded pipe. It is a longitudinal seam welded pipe, with substrate in low alloy steel X65 and clad plate in Alloy 625 (welded by a solid state process). The region is a detail in the side of the Ni alloy clad plate where a grain refinement has occurred probably due to recrystallization of a strain hardened region during later heat treatment. The microhardness of this region is a lot higher than the value obtained out of this region, in the clad plate.

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ML00133 / May.2018

Seam Welded Pipe Cladded with Alloy 625

M - LAS / Ni AlloyP - Longitudinal Seam Welded PipeAp - Oil and GasCd - Welding

Cm - Oxalic Acid Electrolytic EtchDf - Grain refined structure