High Alloy Steel

3 cases · 3 images

Crevice Corrosion in a Subsea System — Aspect Before Analysis

Capture method: NItal Etched Macro clear all

High Alloy Steel — sub-branches

Austenitic / Martensitic 1Austenitic Stainless Steel 19Duplex Stainless Steel 1Ferritic Stainless Steel 2Heat Resistant Steel 4High Mn Austenitic Steel 1Lean Duplex Stainless Steel 1Martensitic Stainless Steel 10Nickel Alloy Steel 1Precipitation Hardened Stainless Steel 4Super Duplex Stainless Steel 7Wear Resistant Steel 1

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Macrography of a circumferential section of the roller bearing, showing two different structures: one, white and hard (64 HRc), close to the external surface; and the other, dark and soft (21 HRc), close to the internal surface. The hardness in the thickness, close to the interface, is about 50 HRc.
122
VIEW
ML00131 / Apr.2018
Brittle Failure of a Soft Roller Bearing
M - Wear Resistant SteelP - Roller BearingAp - Mechanical IndustryCd - Heat Treatment Defect
Cm - NItal Etched MacroDf - Duplex structure
The macrography of a longitudinal section shows that the tube did not present local thinning in any region, but the internal and external scales are evidenced. The external surface (OD) is to the top of the figure and the internal surface (ID) is to the bottom of the figure.
123
VIEW
ML00107 / Dec.2017
Carburized 9Cr1MoV Superheater Tube
M - Heat Resistant SteelP - Seamless tubeAp - BoilerCd - Carburization
Cm - NItal Etched MacroDf - Longitudinal Section
Transversal section of the 625 nickel alloy multipass weld. Pipe of 1 1/4' thickness
71
VIEW
ML00066 / May.2017
GMAW Welded Joint in 9%Ni Alloy Steel
M - Nickel Alloy SteelP - Welded Testpiece for QualificationAp - PipelineCd - Welding
Cm - NItal Etched MacroDf - Welded Joint