Sampling and Analysis

7 cases · 47 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Microstructure: Granular Standard: UNS clear all

Sampling and Analysis — sub-branches

At the Surface 7Base Metal 4Fusion Line 4General View 7Heat Affected Zone 2In the Center of the Thickness 3Longitudinal Section 4Low Mag 2Transverse Section 6Weld Metal 6Welded Joint 2

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Decorative table service fork, with a non metallic handle that is broken. The metallic part is about 165 mm long and presents two shapes: the scoop and the handle. The scoop is 53mm wide and 73mm long and the handle is about 9 mm wide and 75 mm long.
731
VIEW
ML00151 / Dec.2018
Ferritic Stainless Steel of a Flatware Fork
M - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Cm - Aspect Before AnalysisDf - General View
Red painted device where the 50 mm x 50 mm 6061 T6 aluminum alloy plate was positioned (in the circle). The image presents the target, positioned 100 meters far from the gun, after the shot and the projectile perforated the plate.
478
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Aspect Before AnalysisDf - General View
Brittle aspect of the failure of the conector in the male thread. Both sides of the fracture.
96
VIEW
ML00078 / Jun.2017
Hydrogen Cracking of IN 718 Subsea Connector
M - NiCrFe AlloyP - ForgingAp - SubseaCd - Hydrogen Embrittlement
Cm - Aspect Before AnalysisDf - General View
Macrography of the pipe to fitting welded joint, in a region where the thickness loss is almost uniform. The pipe is in the left of the figure and the elbow is in the right, with a general thinning (average of 2 mm, considering that the original thickness was 3.7 mm), and a slightly more intense thickness loss at the weld metal near the elbow side.
183
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched MacroDf - Welded Joint
Micrography of the nut in the longitudinal direction, in the center of the thickness, presenting a granular austenitic structure free from detrimental phases.
475
VIEW
ML00062 / Apr.2017
Inconel 718 Lock Nut with Polymer Insert
M - NiCrFe AlloyP - Cold FormedAp - PipingCd - Typical manufacturing
Cm - Kalling Etched Micrography by OMDf - In the Center of the Thickness
xx
117
VIEW
ML00041 / Jun.2017
Fatigue Fracture of Inconel 718 Spline Shaft
M - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
Cm - Aspect Before AnalysisDf - At the Surface
External aspect of the 8" diameter pipe that suffered localized thinning and leakage associated to the welded regions. The vertical weld is the pipe seam and the horizontal weld is the circunferential butt weld.
142
VIEW
ML00005 / Apr.2017
Environmental Hydrogen Damage in Ti Pipe
M - Unalloyed TitaniumP - Longitudinal Seam Welded PipeAp - PipingCd - Hydride Formation
Cm - Aspect Before AnalysisDf - Welded Joint

More from these cases

ML00151 — Ferritic Stainless Steel of a Flatware ForkM - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Micrography of the fork handle in the transverse section, curved, presenting differences between grain size and morphology. In the middle section there are elongated grains and close to the surfaces there are smaller and more equiaxed grains.
82
VIEW
ML00151 / Dec.2018
Ferritic Stainless Steel of a Flatware Fork
M - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Cm - Micro by OM, HCl + Ethanol + Picric AcidDf - Transverse Section
Lateral view of the fork showing the profile. The scoop convex depth is 10 mm and the handle concave depth is 3 mm. The overal thickness of the part is 1 mm.
53
VIEW
ML00151 / Dec.2018
Ferritic Stainless Steel of a Flatware Fork
M - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Cm - Aspect Before AnalysisDf - General View
Micrography of a longitudinal section of the fork, at the scoop to handle position (scoop to the right of the figure and handle to the left). The full thickness is presented in the image and it is possible to see that in the handle location the ferritic grains are larger in the center of the thickness than close to the surfaces, and in the scoop position the grains tend to be more uniform through the thickness.
50
VIEW
ML00151 / Dec.2018
Ferritic Stainless Steel of a Flatware Fork
M - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Cm - Micro by OM, HCl + Ethanol + Picric AcidDf - Longitudinal Section
Micrography of a fork longitudinal section, at the handle (close to the transition betwee the scoop and handle). The full thickness is presented in the image and it is possible to see that the ferritic grains are larger in the center of the thickness than close to the surfaces.
49
VIEW
ML00151 / Dec.2018
Ferritic Stainless Steel of a Flatware Fork
M - Ferritic Stainless SteelP - Foodstuff ArticleAp - KitchenCd - Typical manufacturing
Cm - Micro by OM, HCl + Ethanol + Picric AcidDf - Longitudinal Section
ML00145 — Impact of a .380 Winchester on 6061 T6 PlateM - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Aspect of a typical .308 Winchester projectile, similar to the one adopted to shot the plate, cut in a longitudinal section. It is a Cu alloy case filled with Pb-Sb.
61
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Longitudinal Section AspectDf - Longitudinal Section
Aspect of the 3/8" thickness plate, 50 mm x 50 mm, of the aluminum alloy plate, in the face of impact with the projectile. The plate was perforated by the bullet.
52
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Aspect Before AnalysisDf - General View
Other view of the 3/8" thickness, 50 mm x 50 mm, 6061 T6 aluminum plate, in the face of impact with the projectile. The plate suffered a localized perforation.
34
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Aspect Before AnalysisDf - General View
Other view of the 3/8" thickness, 50 mm x 50 mm, 6061 T6 aluminum plate, in the opposite face of impact. The plate suffered a localized perforation and this image shows the position of the exit of the bullet.
31
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Aspect Before AnalysisDf - General View
Detail of the position where the projectile strike the plate. The plate suffered a localized perforation.
29
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Surface AspectDf - Low Mag

+9 more from this case →

ML00078 — Hydrogen Cracking of IN 718 Subsea ConnectorM - NiCrFe AlloyP - ForgingAp - SubseaCd - Hydrogen Embrittlement
Micrography of the longitudinal section of the forging material, presenting a granular austenite, precipitation hardened.
84
VIEW
ML00078 / Jun.2017
Hydrogen Cracking of IN 718 Subsea Connector
M - NiCrFe AlloyP - ForgingAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - Longitudinal Section
ML00065 — Erosion Corrosion of Monel PipingM - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Micrography of the pipe longitudinal base metal.
148
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched Micrography by OMDf - Base Metal Left Side
Micrographic detail of the pipe base metal presenting a granular microstructure. Some inclusions are also visible.
142
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched Micrography by OMDf - Base Metal Left Side
Micrography of the elbow base metal. The comparison with the pipe micrography shows an important difference of thickness.
132
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched Micrography by OMDf - Base Metal Right Side
Elbow base metal micrographic detail presenting a granular microstructure. Like the pipe, the microstructure reveals inclusions.
106
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched Micrography by OMDf - Base Metal Right Side
Micrography of the pipe heat affected zone. The weld metal is on the right.
91
VIEW
ML00065 / May.2017
Erosion Corrosion of Monel Piping
M - NiCu AlloyP - Seamless PipeAp - Chemical IndustryCd - Erosion Corrosion
Cm - Kalling Etched Micrography by OMDf - Fusion Line Left Side

+11 more from this case →

ML00062 — Inconel 718 Lock Nut with Polymer InsertM - NiCrFe AlloyP - Cold FormedAp - PipingCd - Typical manufacturing
The nut was sectioned in the longitudinal direction to reveal the position of the Nylon insert.
59
VIEW
ML00062 / Apr.2017
Inconel 718 Lock Nut with Polymer Insert
M - NiCrFe AlloyP - Cold FormedAp - PipingCd - Typical manufacturing
Cm - Aspect Before AnalysisDf - Transverse Section
ML00041 — Fatigue Fracture of Inconel 718 Spline ShaftM - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
The micrography of a transverse section of the shaft shows the granular austenitic structure close to the surface of the shaft.
67
VIEW
ML00041 / Jun.2017
Fatigue Fracture of Inconel 718 Spline Shaft
M - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
Cm - Kalling Etched Micrography by OMDf - At the Surface
Micrographic detail of the granular austenitic structure close to the surface of the shaft.
64
VIEW
ML00041 / Jun.2017
Fatigue Fracture of Inconel 718 Spline Shaft
M - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
Cm - Kalling Etched Micrography by OMDf - At the Surface
The micrography of a transverse section of the shaft shows a duplex grain size structure in the center of the shaft.
49
VIEW
ML00041 / Jun.2017
Fatigue Fracture of Inconel 718 Spline Shaft
M - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
Cm - Kalling Etched Micrography by OMDf - In the Center of the Thickness
The micrography of a transverse section of the shaft shows a duplex grain size structure in the center of the shaft. This conditions was probably generated due to the delta phase presented in segregated bands in the center of the original bar.
56
VIEW
ML00041 / Jun.2017
Fatigue Fracture of Inconel 718 Spline Shaft
M - NiCrFe AlloyP - ShaftAp - Oil and GasCd - Vibration Induced Fatigue
Cm - Kalling Etched Micrography by OMDf - In the Center of the Thickness