Optical Microscope

2 cases · 14 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Alpha Standard: B Detail focus: Sampling and Analysis clear all

Optical Microscope — sub-branches

FeCl3+HCl+H2O Etched Micro 2Kroll Etched Micrography by OM 7Micrography by OM 5

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Low magnification micrography transverse to the fillet weld in the pipe. The pipe base metal is to the bottom of the figure and the weld metal is to the top. The heat affected zone in the middle, shows a coarse grain size structure.
59
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Welded Joint
Tin Bronze Wear Ring of Seawater Pump
2
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - General View

More from these cases

ML00179 — Hydrides in Titanium WeldM - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Low magnification micrography showing the weld metal, full of pores, indicating that the field welding was not properly shileded.
50
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Weld Metal
Coarse grains in the heat affected zone.
46
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Heat Affected Zone
Micrography of the weld metal at the fillet weld where the cracking started, showing several brittle microcracks that corresponds to the regions where the fractography showed secondary crackis.
35
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Weld Metal
Micrographic detail of the weld metal brittle microcracks, in regions with hydrides formation.
32
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Weld Metal
Brittle crack in the surface of the welded joint, at the heat affected zone close to the fusion line.
30
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Kroll Etched Micrography by OMDf - Heat Affected Zone

+6 more from this case →

ML00166 — Tin Bronze Wear Ring of Seawater PumpM - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Tin Bronze Wear Ring of Seawater Pump
2
VIEW
ML00166 / Jul.2020
Tin Bronze Wear Ring of Seawater Pump
M - Tin BronzeP - Wear RingAp - ShipCd - Removed From Service
Cm - FeCl3+HCl+H2O Etched MicroDf - General View