Non Ferrous Alloys

17 cases · 103 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: Scanning Electron Microscope clear all

Non Ferrous Alloys — sub-branches

Aluminum Alloy 6Copper Alloy 9Nickel Alloy 10Titanium Alloy 6

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Low magnification view of the WHEEL 1 fracture surface. The thickness of the wheel in this position (flat and paralell to the wheel face) is about 2.5 mm. The aspect of the fracture is similar all through the fracture perimeter, including the region where the fracture propagation changes the direction.
66
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Fractography by SEMDf - General View
Aspect of the opened crack by scanning electron microscopy, showing the coarser structure in the weld (right side of the figure).
33
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Fracture
Low magnification image by scanning electron microscopy. In the bottom of the image the fracture appearance is brittle and presenting several secondary cracks. In the top of the image the fracture is fully flat, also without macroscopic plastic deformation.
33
VIEW
ML00176 / Nov.2021
Hydride Formation in a Titanium Blade
M - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
Cm - Fractography by SEMDf - Fracture
Scanning electron microscopy of the internal surface of the tube, showing that under the deposits there are regions of localized corrosion.
30
VIEW
ML00170 / Sep.2020
MIC in Aluminum Brass Tubes
M - Aluminum BrassP - Seamless tubeAp - MaritimeCd - Preferential Dissolution
Cm - Surface Aspect by SEMDf - Internal Surface
The through wall cracking was opened and the fracture surface presents a full integranular morphology, typical of an intergranular stress corrosion cracking.
79
VIEW
ML00165 / Jul.2020
SCC of Aluminum Bronze Heating Coil
M - Aluminum BronzeP - Seamless tubeAp - Oil and GasCd - Stress Corrosion
Cm - Fractography by SEMDf - Stress Corrosion Cracks
Aspect of the coaster surface grooves, by scanning electron microscopy in a low magnification, showing in the right side the flat region that serves as a support; and in the left side the decorative grooves. The smooth surface in the groove suggests that the coasters were manufactured by casting.
66
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - Surface Aspect by SEMDf - At the Surface
Micrography, by scanning electron microscopy. The alloy is a precipitation hardened material, and the stains at the surface are associated to differential etching in second phases and inclusions.
35
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Micrography by SEMDf - Granular structure
Micrography of the plate in a section, showing the alpha grains plus beta phase microstructure in the middle of the thickness. The sample was mechanically-electrolitically polished and etched with HF+HNO3+H2O solution.
27
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by SEMDf - Alpha and Beta

More from these cases

ML00183 — Ductile Behavior of an Aluminum WheelM - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
WHEEL 1 fracture detail showing a small shrinkage in the left side of the photo and dimples in the right side of the photo.
73
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Fractography by SEMDf - Ductile Fracture
WHEEL 1 fracture detail showing small regions of shearing.
67
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Fractography by SEMDf - Elongated Dimples
WHEEL 1 fracture detail showing small regions with smooth aspect, and brittle microcracks. But predominantly the micromechanism is by dimples.
70
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Fractography by SEMDf - Cracks
WHEEL 1 fracture detail of the brittle microcracks. The analysis of the material microstructure showed that these microcracks are associated to iron rich phases.
68
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Fractography by SEMDf - Cracks
Low magnification micrography transverse to the fracture surface of the WHEEL 1. The fracture is in the top of the image and there is a void (shrinkage) not connected to the fracture .
34
VIEW
ML00183 / Dec.2022
Ductile Behavior of an Aluminum Wheel
M - Aluminum Silicon MagnesiumP - CastingAp - AutomotiveCd - Ductile Behavior
Cm - Micrography by SEMDf - Fracture

+3 more from this case →

ML00179 — Hydrides in Titanium WeldM - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
In the region where the fracture started there are brittle aspects resembling a cleavage micromechanism and several secondary cracks, transverse to the fracture surface, as well as propagation by fatigue (striation).
36
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Brittle Cracks
Fractography showing brittle secondaryy cracks in the region where the cracking was originated.
34
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Secondary Cracks
Fractography showing propagation by fatigue. Striation.
26
VIEW
ML00179 / Feb.2022
Hydrides in Titanium Weld
M - Unalloyed TitaniumP - In Field WeldAp - Chemical IndustryCd - Hydride Formation
Cm - Fractography by SEMDf - Fatigue Striation
ML00176 — Hydride Formation in a Titanium BladeM - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
The position of the fracture at the starting point of the failure is brittle, transgranular, with a cleavage/quase-cleavage morphology.
24
VIEW
ML00176 / Nov.2021
Hydride Formation in a Titanium Blade
M - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
Cm - Fractography by SEMDf - Cleavage Facets
Aspect by SEM of the secondary crack at the blade surface.
18
VIEW
ML00176 / Nov.2021
Hydride Formation in a Titanium Blade
M - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
Cm - Surface Aspect by SEMDf - At the Surface
At the surface of the blade there are microcracks with a brittle aspect.
23
VIEW
ML00176 / Nov.2021
Hydride Formation in a Titanium Blade
M - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
Cm - Surface Aspect by SEMDf - Secondary Cracks
SEM fractograph showing a cleavage facet with radiating river-pattern markings and scattered fine surface particles.
1
VIEW
ML00176 / Nov.2021
Hydride Formation in a Titanium Blade
M - Unalloyed TitaniumP - BladeAp - Oil and GasCd - Hydride Formation
Cm - Fractography by SEMDf - Cleavage Facets
ML00170 — MIC in Aluminum Brass TubesM - Aluminum BrassP - Seamless tubeAp - MaritimeCd - Preferential Dissolution
Microscopic detail, by scanning electron microscope, of a region where there is a localized dissolution at the internal surface of the tube. The deposits are adhered at the surface and under the deposits, the analysis indicated increased sulfur levels, suggesting SRB (sulfate reduced bacteria) effects.
31
VIEW
ML00170 / Sep.2020
MIC in Aluminum Brass Tubes
M - Aluminum BrassP - Seamless tubeAp - MaritimeCd - Preferential Dissolution
Cm - Surface Aspect by SEMDf - Pitting
Scanning electron microscopy aspect of the region inside of a pit. The aspect is of a chemical attack, generated by the metabolic by-products of the adhered microorganism. The effect is of a localized dissolution and the granular tube microsctruture is revealed.
40
VIEW
ML00170 / Sep.2020
MIC in Aluminum Brass Tubes
M - Aluminum BrassP - Seamless tubeAp - MaritimeCd - Preferential Dissolution
Cm - Surface Aspect by SEMDf - Corrosion
ML00165 — SCC of Aluminum Bronze Heating CoilM - Aluminum BronzeP - Seamless tubeAp - Oil and GasCd - Stress Corrosion
Fractographic detail of the through wall cracking after opening, presenting a full integranular morphology, typical of an intergranular stress corrosion cracking.
79
VIEW
ML00165 / Jul.2020
SCC of Aluminum Bronze Heating Coil
M - Aluminum BronzeP - Seamless tubeAp - Oil and GasCd - Stress Corrosion
Cm - Fractography by SEMDf - Stress Corrosion Cracks
ML00156 — Antique Silver Plated Decorative PieceM - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Detail of the previous photo showing the flat surface in the right side and the grooves in the left side. The flat side is scratched and the grooves presented a smooth finishing (with dendritic morphology).
57
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - Surface Aspect by SEMDf - At the Surface
Detail of the flat scratched region of the coaster surface. The dark grey "nodules" are lead (Pb) base inclusions.
50
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - Surface Aspect by SEMDf - At the Surface
Detail of the groove region, showing a typical casting morphology at the surface: smooth and presenting a dendritic aspect with interdendritic shrinkage. Some dark grey "nodules" with Pb inclusions are also observed.
51
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - Surface Aspect by SEMDf - At the Surface
There are some regions in the coaster surface where pores associated to shrinkage is evident.
49
VIEW
ML00156 / Jan.2020
Antique Silver Plated Decorative Piece
M - BrassP - Decorative PieceAp - OrnamentalCd - Non Destructive Examination
Cm - Surface Aspect by SEMDf - Casting defects
ML00145 — Impact of a .380 Winchester on 6061 T6 PlateM - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Micrographic detail, by scanning electron microscopy, of the precipitation hardened granular structure. The stains are preferential etch of second particles.
32
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Micrography by SEMDf - Aligned particles
Detail of the margin of the perforated hole in the impact position. It is interesting to observe extreme plastic deformation created by the perforation expulsing the material from the hole, in the direction of the impact.
28
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Surface Aspect by SEMDf - Plastic Deformation
Detail of the plate surface showing striation as the finishing, deformed by the projectile effect in shearing the thickness.
24
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Surface Aspect by SEMDf - At the Surface
Detail of the plate surface showing striation as the finishing, deformed by the projectile effect in shearing the thickness.
24
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Surface Aspect by SEMDf - At the Surface
High magnification detail of the plate surface showing the deformed striation.
21
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Surface Aspect by SEMDf - At the Surface

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ML00144 — Impact of a .380 Winchester on Ti64 PlateM - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Micrographic detail by SEM, showing the beta phase EDS analysis was conducted in this microstructure and the results indicated 90.8%Ti + 6.8%Al + 2.4%V for the alpha phase (the dark grains as a matrix); and 84.7%Ti + 5.2%Al + 8.8%V + 1.2%Fe for the beta phase (light with aicular morphology inside the phase).
25
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by SEMDf - Alpha and Beta
Aspect of the surface of the plate by scanning electron microscopy, at the impact position, showing that the bullet was melted and deposited. The plate presented round cracks in the margin of the projectile impact position.
14
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Surface Aspect by SEMDf - Melted film
Aspect of the surface of the plate, by scanning electron microscopy, in the center of the projectile impact position, showing the melted bullet covering the surface.
14
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Surface Aspect by SEMDf - Melted film
Detailed aspect of the surface of the plate at the projectile impact position.
12
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Surface Aspect by SEMDf - Melted film
Aspect of the surface of the plate, by scanning electron microscopy, out of the center of the projectile impact position, showing that the melted bullet covered a large part of the surface.
12
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Surface Aspect by SEMDf - Melted film

+19 more from this case →