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Characterization of the carbides in the steel X20CrMoV12.1 used in thermal power plants
Author(s) -
Skobir Danijela Anica,
Godec Matjaz,
Jenko Monika,
Markoli Bostjan
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2759
Subject(s) - tempering , carbide , electron backscatter diffraction , martensite , materials science , microstructure , transmission electron microscopy , metallurgy , nanotechnology
Microstructure of the steel X20CrMoV12.1, used for thermal power plants, after tempering at approximately 500 °C consists of tempered martensite with carbide precipitates. The evolution of the chemical and phase composition of carbide precipitates in X20CrMoV12.1 steel was studied in the as‐received state after 56 000 h at 470–530 °C under load and in heat‐treated state (1–1344 h at 800 °C) using transmission electron microscopy (TEM) and electron backscatter diffraction (EBSD) technique. The precipitates found in service‐loaded state as well as in heat‐treated state were of M 23 C 6 type. In all samples two morphologically different types of carbides were established. Copyright © 2008 John Wiley & Sons, Ltd.