Banded Structure

2 cases · 6 images for “fracture”

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Results

SortRelevanceNewestOldestTitle A-ZTitle Z-A
Low magnification micrography of the nut in the longitudinal section, presenting the machined internal thread and a banded microstructure.
55
VIEW
ML00148 / Sep.2018
Brittle Fracture of a 420 SS Barrel Nut
M - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Cm - Kalling Etched Micrography by OMDf - Banded Structure
Micrography of the longitudinal section of the bolt showing a martensitic structure, with segregation bands evidenced by the chemical etch.
99
VIEW
ML00126 / Mar.2018
Hydrogen Fracture of Subsea Allen Bolts
M - Low Alloy Medium Carbon QTP - Coated ProductAp - SubseaCd - Hydrogen Embrittlement
Cm - Nital Etched Micrography by OMDf - Banded Structure

More from these cases

ML00148 — Brittle Fracture of a 420 SS Barrel NutM - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Microstructural aspect of a longitudinal section of the nut, in the middle of the thickness. Martensitic structure, banded.
46
VIEW
ML00148 / Sep.2018
Brittle Fracture of a 420 SS Barrel Nut
M - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Cm - Kalling Etched Micrography by OMDf - Banded Structure
Microstructural detail of the banded structure. The rough aspect of the band is created by the carbides (better seen in the higher magnification image) in the segregation band.
38
VIEW
ML00148 / Sep.2018
Brittle Fracture of a 420 SS Barrel Nut
M - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Cm - Kalling Etched Micrography by OMDf - Banded Structure
Vickers microhardness identations using 100 grams. In a position out of the band (top line). Values from left to right, 380HV; 390HV and 394HV. In a position inside the band (bottom line). Values from left to right, 433HV, 483HV and 473 HV.
33
VIEW
ML00148 / Sep.2018
Brittle Fracture of a 420 SS Barrel Nut
M - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Cm - Kalling Etched Micrography by OMDf - Banded Structure
Low magnification micrography of the nut in the longitudinal section, presenting the machined internal thread and a banded microstructure. It is possible to see that the contact pressure in the thread caused a surface plastically deformation.
24
VIEW
ML00148 / Sep.2018
Brittle Fracture of a 420 SS Barrel Nut
M - Martensitic Stainless SteelP - Barrel NutAp - LiftingCd - Heat Treatment Defect
Cm - Kalling Etched Micrography by OMDf - Banded Structure