Thermal-induced evolution of secondary phases in Cr–Mo–V low alloy steels

Four low alloy steels with different contents of molybdenum and vanadium were investigated. The steels were annealed at 773, 793, 853, 873, 933, 973, and 993 K for 500, 1000, 3000, and 10000 h. Techniques of transmission electron microscopy and thermodynamic calculations (ThermoCalc) were used to ch...

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Bibliographic Details
Published in:Journal of materials science 2006-06, Vol.41 (11), p.3425-3433
Main Authors: Janovec, J, Svoboda, M, Kroupa, A, Výrostková, A
Format: Article
Language:English
Subjects:
alloys
Annealing
Applied sciences
Carbides
Chromium
Chromium base alloys
Composition
electron microscopy
energy industry
Evolution
Exact sciences and technology
Low alloy steels
Materials science
Mathematical analysis
Metals. Metallurgy
Molybdenum
Phases
steel
Structural steels
thermodynamics
Transmission electron microscopy
vanadium
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Summary:Four low alloy steels with different contents of molybdenum and vanadium were investigated. The steels were annealed at 773, 793, 853, 873, 933, 973, and 993 K for 500, 1000, 3000, and 10000 h. Techniques of transmission electron microscopy and thermodynamic calculations (ThermoCalc) were used to characterise influence of the steel bulk composition and the annealing conditions on evolution of carbides M₃C, M₂C, M₇C₃, M₂₃C₆, M₆C, and MC (M=metallic element). Changes in structure types and metal compositions of the carbides were characterised in detail. The work was done with the intention to obtain more information about the secondary phase evolution in low alloy steels used in energy industries.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-006-6744-7