Micrography by OM

6 cases · 13 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Casting clear all

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Micrographic detail of the zinc at the fracture surface.
57
VIEW
ML00138 / Jun.2018
Liquid Metal Embrittlement of a HSLA Steel
M - High Strength Low AlloyP - Coated ProductAp - Mechanical IndustryCd - Liquid Metal Embrittlement
Cm - Micrography by OMDf - Zn Layer
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.
120
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 as polished of the region where there was a refrigeration hole, presenting a cracking.
35
VIEW
ML00042 / Apr.2017
Gas Turbine Blade IN 939, Coated
M - NiCrCo AlloyP - CastAp - Gas TurbineCd - Intergranular Cracking
Cm - Micrography by OMDf - Cracking
Low magnification micrography presenting the grapjite morphology.
138
VIEW
ML00032 / Jan.2017
Cast Iron Case of Drilling Equipment
M - Gray Cast ironP - CastAp - O&G Well DrillingCd - Typical manufacturing
Cm - Micrography by OMDf - Graphite Type A (ASTM A247)
Micrographic detail of the defect (void in the right side of the figure), as polished. In the left side it is the surface of the water blade and there are some non metalic inclusions in this region.
54
VIEW
ML00017 / Apr.2017
Casting Defect in CA6NM
M - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Casting Defect
Cm - Micrography by OMDf - Void
The intake valve seat cylinder, manufactured in a high alloy white cast iron, presents a network of primary carbides, not degradated even after high temperature exposition during all lifetime.
632
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Network of Primary Carbides

More from these cases

ML00070 — Automotive Light Alloy Wheel Repaired By WeldingM - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
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.
75
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
ML00032 — Cast Iron Case of Drilling EquipmentM - Gray Cast ironP - CastAp - O&G Well DrillingCd - Typical manufacturing
Grey cast iron structure. As polished.
110
VIEW
ML00032 / Jan.2017
Cast Iron Case of Drilling Equipment
M - Gray Cast ironP - CastAp - O&G Well DrillingCd - Typical manufacturing
Cm - Micrography by OMDf - Graphite in Flakes
Grey cast iron with graphite in flakes.
97
VIEW
ML00032 / Jan.2017
Cast Iron Case of Drilling Equipment
M - Gray Cast ironP - CastAp - O&G Well DrillingCd - Typical manufacturing
Cm - Micrography by OMDf - Graphite in Flakes
ML00017 — Casting Defect in CA6NMM - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Casting Defect
Micrographic detail non metalic inclusions in the region where there are casting defects. As polished.
48
VIEW
ML00017 / Apr.2017
Casting Defect in CA6NM
M - Martensitic Stainless SteelP - Machined PartAp - EnergyCd - Casting Defect
Cm - Micrography by OMDf - Non Metallic Inclusions
ML00003 — Cast iron Engine Valve SeatsM - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
The intake valve seat cylinder, manufactured in a high alloy white cast iron, presents a network of primary carbides, not degradated even after high temperature exposition during all lifetime.
206
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Network of Primary Carbides
The exhaust valve seat cylinder, manufactured in a high alloy white cast iron, presents a coalesced structure, degradated by high temperature exposition during the lifetime.
182
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Coalesced structure
The exhaust valve seat cylinder, manufactured in a high alloy white cast iron, presents a coalesced structure, degradated by high temperature exposition during the lifetime.
137
VIEW
ML00003 / Apr.2017
Cast iron Engine Valve Seats
M - White Cast IronP - Valve SeatAp - MaritimeCd - Microstructural Evolution
Cm - Micrography by OMDf - Coalesced structure