Structure

6 cases · 29 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Product: Rolled Plate Capture method: Optical Microscope Detail focus: Microstructure clear all

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Micrography of the plate in a section, in the middle of the thickness. The aligned pitting is associated to the chemical etch of inclusions and second phases. The structure is granular but the grain boundaries do not appear at that magnification, originally 50x.
50
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Keller Etched Micrography by OMDf - Aligned particles
Micrography of the plate in the middle of the thickness, showing the aligned structure tyical of a rolling process. The sample was mechanically-electrolitically polished and etched with HF (10%) + HNO3 (5%) +H2O (85%) solution.
28
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
Micrography of the plate in a section, showing a ferritic-pearlitic microstructure in the middle of the thickness.
84
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrography of the plate in a section, showing a martensitic structure in the middle of the thickness.
63
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Nital Etched Micrography by OMDf - Martensite
Ferritic perlitic structure of the plate. Longitudinal section.
28
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
The plate longitudinal section presents a granular refined structure. Biphasic.
340
VIEW
ML00029 / Jan.2017
Titanium Plate for Subsea Application
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Typical manufacturing
Cm - Micrography by OM, HF + HNO3 + H2O etchDf - Grain refined structure

More from these cases

ML00145 — Impact of a .380 Winchester on 6061 T6 PlateM - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Micrography of the plate in a section, in the middle of the thickness, in a position where the plate was not affected by the shot. The microstructure is granular although the grain boundaries are not resolvable at this magnification. The black spots are localized corrosion in aligned particles.
49
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Keller Etched Micrography by OMDf - Aligned particles
Micrographic detail of the plate in the middle of the thickness. At this magnification it is possible to see the grain boundaries and the black spots are localized etching in aligned particles.
43
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Keller Etched Micrography by OMDf - Granular structure
Micrographic detail of the plate in the middle of the thickness. At this magnification it is possible to see the grain boundaries and the black spots are localized etching in aligned particles.
37
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Keller Etched Micrography by OMDf - Granular structure
Micrography of the damaged plate at the side of the bullet impact, top of the figure. The perforated hole expulsed the material to the top and bottom directions. There are evidences of plastic deformation of the plate microstructure and the hardness level close to the hole increased from 123 HV to 131 HV (1kg)
17
VIEW
ML00145 / Sep.2018
Impact of a .380 Winchester on 6061 T6 Plate
M - Aluminum Magnesium SiliconP - Rolled PlateAp - StructureCd - Pierced
Cm - Keller Etched Micrography by OMDf - Strain Hardened
ML00144 — Impact of a .380 Winchester on Ti64 PlateM - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Micrography showing the alpha plus beta microstructure in the middle of the thickness. The sample was mechanically-electrolitically polished and etched with HF (10%) + HNO3 (5%) +H2O (85%) solution.
32
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
Micrographic detail of the plate, showing the alpha (light grains as a matrix) plus beta (dark phase) microstructure. Etched with HF (10%) + HNO3 (5%) +H2O (85%) solution.
28
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
Micrographic detail of the plate, showing the aligned beta phase (dark) in the alpha grains (light) microstructure. Etched with HF (10%) + HNO3 (5%) +H2O (85%) solution.
24
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
Micrographic detail of the plate, showing the aligned beta (dark phase) in alpha microstructure. Etched with HF+ HNO3+H2O solution.
26
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
Micrography by SEM of the plate in the middle of the thickness, showing the alpha microstructure (dark grains) and the beta phase (light). Etched with HF+HNO3+H2O.
35
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Alpha and Beta
ML00143 — Impact of a .308 Winchester on A36 PlateM - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Micrography of the plate in a section, showing a ferritic-pearlitic microstructure in the middle of the thickness, in a position where the plate was not affected by the shot.
65
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrographic detail of the plate in a section, showing a ferritic-pearlitic microstructure in the middle of the thickness.
66
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrographic detail of the ferritic-pearlitic microstructure.
53
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Micrography of the damaged plate at the side of the bullet impact, top of the figure. The perforated hole expulsed the material to the top and bottom directions and the copper alloy is evident at the hole surface.After etching it is clear the strong plastic deformation of the plate microstructure and the hardness level close to the hole increased from 151 HV to 308 HV (1kg).
22
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Strain Hardened
Micrographic detail of the strong plastic deformation of the ferritic-pearlitic structure and the copper alloy adhered at the hole surface.
16
VIEW
ML00143 / Aug.2018
Impact of a .308 Winchester on A36 Plate
M - Low Carbon SteelP - Rolled PlateAp - StructureCd - Pierced
Cm - Nital Etched Micrography by OMDf - Strain Hardened

+1 more from this case →

ML00142 — Impact of a .308 Winchester on AR500 PlateM - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Micrographic detail of the plate in a section, showing a martensitic structure in the middle of the thickness.
56
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Nital Etched Micrography by OMDf - Martensite
Micrographic detail of the high hardness martensitic structure. Uniform structure.
58
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Nital Etched Micrography by OMDf - Martensite
Micrographic detail of the high hardness martensitic structure. Exactly in the middle of the plate it is possible to see some aligned inclusions.
60
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Nital Etched Micrography by OMDf - Martensite
ML00033 — Plasma Cut of 1 1/4" Steel PlateM - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Ferritic perlitic structure of the plate. Longitudinal section.
29
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Ferrite and Pearlite
Martensitic structure at the cutting HAZ. Longitudinal section.
29
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Martensite
Martensitic structure at the cutting HAZ. Longitudinal section.
29
VIEW
ML00033 / Jan.2017
Plasma Cut of 1 1/4" Steel Plate
M - High Strength Low AlloyP - Rolled PlateAp - StructureCd - Cutting
Cm - Nital Etched Micrography by OMDf - Martensite
ML00029 — Titanium Plate for Subsea ApplicationM - Ti6Al4VP - Rolled PlateAp - StructureCd - Typical manufacturing
Alpha and beta phases. Refined Structure.
52
VIEW
ML00029 / Jan.2017
Titanium Plate for Subsea Application
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Typical manufacturing
Cm - Micrography by OM, HF + HNO3 + H2O etchDf - Two phases
Alpha and beta phases. Refined Structure.
46
VIEW
ML00029 / Jan.2017
Titanium Plate for Subsea Application
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Typical manufacturing
Cm - Micrography by OM, HF + HNO3 + H2O etchDf - Two phases