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2 cases · 12 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Condition: Removed From Service Microstructure: Dendritic Capture method: Optical Microscope clear all

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Micrography of the cast rim, base metal, in the as polished condition, showing the dendrites of alpha aluminum and interdendritic eutectic Si/alpha, silicon particles in a coalesced condition that sugegsts a solution annealed treatment.
119
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Micrography by OMDf - Base Metal
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
419
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure

More from these cases

ML00070 — Automotive Light Alloy Wheel Repaired By WeldingM - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Micrography of the cast rim, base metal, showing the dendrites of alpha aluminum and interdendritic eutectic Si/alpha, silicon particles in a coalesced condition that suggests a solution annealed treatment. After etching it is possible to identify a transgranular precipitation (aging) and a dark FeSiAl phase (neddles).
87
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Base Metal
Micrographic detail of the cast rim, base metal, in the as polished condition, showing the dendrites of alpha aluminum and interdendritic eutectic Si/alpha, silicon particles in a coalesced condition that sugegsts a solution annealed treatment.
74
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Micrography by OMDf - Base Metal
Micrographic detail of the cast rim, base metal, showing the dendrites of alpha aluminum and interdendritic eutectic Si/alpha, silicon particles in a coalesced condition that suggests a solution annealed treatment. After etching it is possible to identify a transgranular precipitation (aging) and a dark FeSiAl phase (neddles).
62
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Base Metal
Low magnification micrography of the welded region, showing the base metal in the bottom, the fusion zone (between the liquidus and solidus temperatures) in the center and the weld metal in the top. There are pores close to the weld metal and in the fusion zone the interdendritic space was melted and the eutectic morphology was changed.
64
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Weld Repair
The cast material that presents for the base metal a coalesced silicon particles in the interdendritic space and intragranular precipitation shows a solution effect at the heat affected zone.
52
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Heat Affected Zone

+2 more from this case →

ML00058 — High-Pressure Piston Seal in Casting Al AlloyM - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
45
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
34
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure
Micrography of the cast Aluminum alloy (AlSnCuNi) typically adopted for bearing applications.
32
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched Micrography by OMDf - Casting Structure