On the role of Nb in Z-phase formation in a 12% Cr steel

L. Cipolla; Hilmar Kjartansson Danielsen; P.E. Di Nunzio; D. Venditti; John Hald; Marcel A. J. Somers

doi:10.1016/j.scriptamat.2010.04.025

On the role of Nb in Z-phase formation in a 12% Cr steel

L. Cipolla, Hilmar Kjartansson Danielsen, P.E. Di Nunzio, D. Venditti, John Hald, Marcel A. J. Somers

Centro Sviluppo Materiali S.p.A.

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Z-phase precipitation in two model alloys, 12CrVNbN and 12CrVN, has been investigated. The alloys were aged up to 104 h and their precipitate evolution was followed by X-ray diffraction and transmission electron microscopy. The formation rate of Z-phase from vanadium-based nitrides, (V,Nb)N, in the Nb-containing alloy was observed to proceed considerably faster than in the Nb-free alloy. A hypothesis is put forward that explains the enhanced stability of VN in terms of changes in the interfacial energy of VN with the ferrite matrix.

Original language	English
Journal	Scripta Materialia
Issue number	63
Pages (from-to)	324-327
ISSN	1359-6462
DOIs	https://doi.org/10.1016/j.scriptamat.2010.04.025
Publication status	Published - 2010

Keywords

TEM
Nitrides
Creep-resistant steels
XRD

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title = "On the role of Nb in Z-phase formation in a 12% Cr steel",

abstract = "Z-phase precipitation in two model alloys, 12CrVNbN and 12CrVN, has been investigated. The alloys were aged up to 104 h and their precipitate evolution was followed by X-ray diffraction and transmission electron microscopy. The formation rate of Z-phase from vanadium-based nitrides, (V,Nb)N, in the Nb-containing alloy was observed to proceed considerably faster than in the Nb-free alloy. A hypothesis is put forward that explains the enhanced stability of VN in terms of changes in the interfacial energy of VN with the ferrite matrix.",

keywords = "TEM, Nitrides, Creep-resistant steels, XRD",

author = "L. Cipolla and Danielsen, {Hilmar Kjartansson} and {Di Nunzio}, P.E. and D. Venditti and John Hald and Somers, {Marcel A. J.}",

year = "2010",

doi = "10.1016/j.scriptamat.2010.04.025",

language = "English",

pages = "324--327",

journal = "Scripta Materialia",

issn = "1359-6462",

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T1 - On the role of Nb in Z-phase formation in a 12% Cr steel

AU - Cipolla, L.

AU - Danielsen, Hilmar Kjartansson

AU - Di Nunzio, P.E.

AU - Venditti, D.

AU - Hald, John

AU - Somers, Marcel A. J.

PY - 2010

Y1 - 2010

N2 - Z-phase precipitation in two model alloys, 12CrVNbN and 12CrVN, has been investigated. The alloys were aged up to 104 h and their precipitate evolution was followed by X-ray diffraction and transmission electron microscopy. The formation rate of Z-phase from vanadium-based nitrides, (V,Nb)N, in the Nb-containing alloy was observed to proceed considerably faster than in the Nb-free alloy. A hypothesis is put forward that explains the enhanced stability of VN in terms of changes in the interfacial energy of VN with the ferrite matrix.

AB - Z-phase precipitation in two model alloys, 12CrVNbN and 12CrVN, has been investigated. The alloys were aged up to 104 h and their precipitate evolution was followed by X-ray diffraction and transmission electron microscopy. The formation rate of Z-phase from vanadium-based nitrides, (V,Nb)N, in the Nb-containing alloy was observed to proceed considerably faster than in the Nb-free alloy. A hypothesis is put forward that explains the enhanced stability of VN in terms of changes in the interfacial energy of VN with the ferrite matrix.

KW - TEM

KW - Nitrides

KW - Creep-resistant steels

KW - XRD

U2 - 10.1016/j.scriptamat.2010.04.025

DO - 10.1016/j.scriptamat.2010.04.025

M3 - Journal article

SN - 1359-6462

SP - 324

EP - 327

JO - Scripta Materialia

JF - Scripta Materialia

IS - 63

ER -

On the role of Nb in Z-phase formation in a 12% Cr steel

Abstract

Keywords

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