Ductile Crack

1 case · 9 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: Micrography by OM clear all

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Micrography of the damaged plate at the side of the bullet impact, top of the figure. The projectile sheared the plate but did not perforate it, and the projectile materials (Cu and Pb) deposited at the .surface. HF+HNO3+H2O chemical etch.
9
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack

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ML00144 — Impact of a .380 Winchester on Ti64 PlateM - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Micrography of the damaged plate at the side of the bullet impact, top of the figure. The projectile, impacted in the right side of the crack, sheared the plate but did not perforate it and created several longitudinal ductile secondary cracks. HF+HNO3+H2O chemical etch.
16
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack
Micrographic detail of the shearing of the material due to the projectile impact. It is a very localized effect. HF+HNO3+H2O chemical etch.
13
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack
Micrography of the 3/8" thickness titanium alloy plate, in a section. The impact side of the plate is to the top of the figure. The plate was sheared through wall in a very localized position. HF+HNO3+H2O chemical etch.
6
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack
Micrography of the 3/8" thickness titanium alloy plate, in a section. The impact side of the plate is to the top of the figure. The plate was sheared through wall in a very localized position. HF+HNO3+H2O chemical etch.
5
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack
Micrographic detail of the damaged plate. The projectile sheared the plate but did not perforate it and created longitudinal ductile secondary cracks. HF+HNO3+H2O chemical etch.
6
VIEW
ML00144 / Aug.2018
Impact of a .380 Winchester on Ti64 Plate
M - Ti6Al4VP - Rolled PlateAp - StructureCd - Non-Pierced
Cm - Micrography by OMDf - Ductile Crack

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