Warlike

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Crevice Corrosion in a Subsea System — Aspect Before Analysis

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Red painted device where the 50 mm x 50 mm high strenght wear resistant steel plate (AR500) was positioned (in the circle). The image presents the target, positioned 100 meters far from the gun, after the shot and the projectile did not penetrate in the plate, and not even affected the material surface, as will be presented in the other figures.
500
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Aspect Before AnalysisDf - General View

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ML00142 — Impact of a .308 Winchester on AR500 PlateM - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-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.
57
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Longitudinal Section AspectDf - Longitudinal Section
Aspect of the 3/8" thickness plate, 50 mm x 50 mm, of the AR500 wear resistant steel, in the face of impact with the projectile. The plate did not suffer any macroscopic damage. It was only stained at the impact surface.
63
VIEW
ML00142 / Aug.2018
Impact of a .308 Winchester on AR500 Plate
M - Low Alloy Wear ResistantP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Aspect Before AnalysisDf - General View
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
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

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