Tantalum-containing Z-phase in 12%Cr martensitic steels

Z-phases in tantalum-containing 12%Cr steels have been investigated. In 12%Cr steel without any Nb or V, the formation of CrTaN Z-phases was observed. In 12%Cr steel which also contained V, the Ta entered Z-phase as a minor element, Cr(V,Ta)N. The crystal structure of Cr(V,Ta)N seems to be identical...

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Bibliographic Details
Published in:Scripta materialia 2009-05, Vol.60 (9), p.811-813
Main Authors: Danielsen, Hilmar Kjartansson, Hald, John
Format: Article
Language:English
Subjects:
Crystal structure
Lattice parameters
Martensitic stainless steels
Martensitic steels
Niobium
Nitrides
Structural steels
Tantalum
Transmission electron microscopy (TEM)
Z-phase
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Description
Summary:Z-phases in tantalum-containing 12%Cr steels have been investigated. In 12%Cr steel without any Nb or V, the formation of CrTaN Z-phases was observed. In 12%Cr steel which also contained V, the Ta entered Z-phase as a minor element, Cr(V,Ta)N. The crystal structure of Cr(V,Ta)N seems to be identical to CrVN Z-phase, while CrTaN is similar to CrNbN Z-phase but with a different lattice parameter.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2009.01.025