Wire

3 cases · 17 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

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Micrography of a longitudinal section of a 4 mm diameter wire base metal, presenting a strain hardened and aligned pearlitic structure.
42
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - Nital Etched Micrography by OMDf - Base Metal
The stainless steel spring broke without any evidence of plastic deformation. The round wire 1/8" diameter has ruptured in a brittle way in this 2" long spring of external diameter of 1/2".
73
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Aspect Before AnalysisDf - General View
Longitudinal section of the 3.6 mm wire, presenting a refined structure.
46
VIEW
ML00036 / Jan.2018
High Strength Medium Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Longitudinal Section

More from these cases

ML00113 — Autogenous Weld of a Carbon Steel WireM - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Low magnification micrography of a longitudinal section of a 4 mm diameter base metal wire, presenting a strain hardened and aligned pearlitic structure.
32
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - Nital Etched Micrography by OMDf - Base Metal
Macrography of a longitudinal section of a 4 mm diameter wire, presenting part of an austogenously welded joint, with the transformation of the strain hardened pearlitic. The base metal is to the left side of the figure, and the heat affected zone is in the center of the figure. There is a (previous austenite) grain growth to the right side of the figure, where it is the center of the weld.
33
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - NItal Etched MacroDf - Welded Joint
Low magnification micrography of a longitudinal section of a 4 mm diameter wire, at the region where the pearlitic strain hardened wire is affected by the welding. The base metal is to the left side and the region of the HAZ that starts with a grain growth is to the right side.
24
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone
Micrography of a longitudinal section of a 4 mm diameter wire, at the heat affected zone created by the autogenous welding, presenting a tempered martensitic structure.
19
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - Nital Etched Micrography by OMDf - Heat Affected Zone
Micrography of a longitudinal section of a 4 mm diameter wire, in the center of the autogenously welded joint, presenting the alignment of the structure (left side of the figure) changing its direction due to the pressure between the parts during the welding. In the center of the weld (right side of the figure) there is a grain growth of the previous austenite structure.
23
VIEW
ML00113 / Jan.2018
Autogenous Weld of a Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Welding
Cm - Nital Etched Micrography by OMDf - In the Center of the Weld

+1 more from this case →

ML00076 — Hydrogen Cracking of a 17-7 PH Subsea SpringM - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
The longitudinal section of the spring wire shows a strain hardened martensitic structure, aged to high strength (602 HV 0.3kg). Previous austenite grains are elongated.
55
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - Longitudinal Section
Micrographic detail of the strain hardened aged martensitic structure. Small aligned delta ferrite islands can be seen.
51
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - Longitudinal Section
The transverse section of the spring wire shows a strain hardened martensitic structure, aged to high strength (602 HV 0.3kg).
48
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - Transverse Section
Micrographic detail of the strain hardened aged martensitic structure.
48
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - Transverse Section
Micrographic detail of the spring wire surface, far from the fracture, showing several small intergranular cracks.
40
VIEW
ML00076 / Jun.2017
Hydrogen Cracking of a 17-7 PH Subsea Spring
M - Precipitation Hardened Stainless SteelP - WireAp - SubseaCd - Hydrogen Embrittlement
Cm - Kalling Etched Micrography by OMDf - At the Surface
ML00036 — High Strength Medium Carbon Steel WireM - Medium Carbon SteelP - WireAp - OffshoreCd - Typical manufacturing
Longitudinal section of the 3.6 mm wire, presenting a strain hardened structure, predominantly perlitic.
41
VIEW
ML00036 / Jan.2018
High Strength Medium Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Longitudinal Section
Transverse section of the 3.6 mm wire, presenting a refined structure.
32
VIEW
ML00036 / Jan.2018
High Strength Medium Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Transverse Section
Transverse section of the 3.6 mm wire, presenting a refined structure predominatly perlitic.
19
VIEW
ML00036 / Jan.2018
High Strength Medium Carbon Steel Wire
M - Medium Carbon SteelP - WireAp - OffshoreCd - Typical manufacturing
Cm - Nital Etched Micrography by OMDf - Transverse Section