Casting

3 cases · 43 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Dendritic clear all

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Micrography of a transverse section of the lifting part, showing interdendritic voids close to the surface at the inner diameter of the padeye. The microstructure is tempered martensite.
450
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Nital Etched Micrography by OMDf - Casting defects
Aspect of the wheel. See the schematic drawing in the next figure
467
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Aspect Before AnalysisDf - General View
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

ML00098 — Brittle Fracture of a Casting Lifting DeviceM - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Aspect of the broken padeye. The outer diameter is about 10" and the thickness of the casting is about 2".
22
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Aspect Before AnalysisDf - General View
Aspect of the fracture surface, showing a brittle morphology. Flat fracture with chevron marks from regions close to the internal diameter of the padeye, where there are secondary cracks.
22
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Aspect Before AnalysisDf - Fracture
Micrography of the lifting padeye showing a dendritic path of a quenched and tempered martensitic microstructure. The segregated regions (white interdendritic regions) are more clearly identified in low magnification. Voids are located in these segregated regions.
21
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Nital Etched Micrography by OMDf - Martensite
Micrography of the lifting padeye showing a quenched and tempered martensitic microstructure. Voids are located in interdendritic segregated regions.
20
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Nital Etched Micrography by OMDf - Martensite
Micrography of the lifting padeye showing a quenched and tempered martensitic microstructure. Voids are located in interdendritic segregated regions. At this magnification the segregation is not clear.
16
VIEW
ML00098 / Nov.2017
Brittle Fracture of a Casting Lifting Device
M - Low Alloy Medium Carbon QTP - CastingAp - LiftingCd - Brittle Fracture
Cm - Nital Etched Micrography by OMDf - Martensite

+12 more from this case →

ML00070 — Automotive Light Alloy Wheel Repaired By WeldingM - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Schematic drawing presenting the position in the rim where the repair by welding was conducted. The region was machined after the welding.
77
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Identification drawingDf - Weld Repair
Profile of the rim of the wheel, total width 215 mm. See the schematic drawing in the next figure.
64
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Transverse Section AspectDf - Transverse Section
Schematic drawing indicating the location of the repair by welding
60
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Identification drawingDf - Transverse Section
Detail of the welded region in the rim of the light alloy wheel.
126
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Aspect Before AnalysisDf - At the Surface
Aspect of the welded region after dye check showing several indications, later identified as hot cracks associated to the repair welding.
114
VIEW
ML00070 / Jan.2019
Automotive Light Alloy Wheel Repaired By Welding
M - Aluminum Silicon MagnesiumP - RimAp - AutomotiveCd - Removed From Service
Cm - Aspect by NDTDf - Cracks

+14 more from this case →

ML00058 — High-Pressure Piston Seal in Casting Al AlloyM - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Macrography of a transverse section of the ring piston seal, shwing a thread in the internal diameter.
54
VIEW
ML00058 / Apr.2017
High-Pressure Piston Seal in Casting Al Alloy
M - Aluminum TinP - CastingAp - EnergyCd - Removed From Service
Cm - Keller Etched MacroDf - Transverse Section
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