The Z-phase in 9-12% Cr ferritic steels: A phase stability analysis

Cenk Kocer; Taichi Abe; Aloysius Soon

doi:10.1016/j.msea.2008.10.028

The Z-phase in 9-12% Cr ferritic steels: A phase stability analysis

Cenk Kocer, Taichi Abe, Aloysius Soon

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

The formation enthalpies of the Z- and B1 MN-phases, where M = Cr, Fe, Nb, and V, were calculated using an ab initio computational method. The relative stability of the Z- and MN-phases was examined in the framework of the CALPHAD methodology. The analysis indicates that the Z-phase is more stable than the B1 MN-phase in the 9-12% Cr ferritic steels. This result is in agreement with experiments where the Z-phase is observed to dominate over the B1 MN-phases after long-term creep.

Original language	English
Pages (from-to)	1-5
Number of pages	5
Journal	Materials Science and Engineering A
Volume	505
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2008.10.028
Publication status	Published - 2009 Apr 15

Bibliographical note

Funding Information:
The authors gratefully acknowledge support from the Australian Partnership for Advanced Computing (APAC) and the Australian Centre for Advanced Computing and Communications (ac3). The authors thank Dr. K. Sawada and Dr. Y. Toda for their helpful comments, and diligent editing of the manuscript, and Prof. S. Ogata, Osaka University, for fruitful discussions about the ab initio calculations. T.A. acknowledges support from the Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency. A.S. acknowledges support from the Australian Research Council (ARC).

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2008.10.028

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title = "The Z-phase in 9-12% Cr ferritic steels: A phase stability analysis",

abstract = "The formation enthalpies of the Z- and B1 MN-phases, where M = Cr, Fe, Nb, and V, were calculated using an ab initio computational method. The relative stability of the Z- and MN-phases was examined in the framework of the CALPHAD methodology. The analysis indicates that the Z-phase is more stable than the B1 MN-phase in the 9-12% Cr ferritic steels. This result is in agreement with experiments where the Z-phase is observed to dominate over the B1 MN-phases after long-term creep.",

author = "Cenk Kocer and Taichi Abe and Aloysius Soon",

note = "Funding Information: The authors gratefully acknowledge support from the Australian Partnership for Advanced Computing (APAC) and the Australian Centre for Advanced Computing and Communications (ac3). The authors thank Dr. K. Sawada and Dr. Y. Toda for their helpful comments, and diligent editing of the manuscript, and Prof. S. Ogata, Osaka University, for fruitful discussions about the ab initio calculations. T.A. acknowledges support from the Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency. A.S. acknowledges support from the Australian Research Council (ARC). ",

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T2 - A phase stability analysis

AU - Kocer, Cenk

AU - Abe, Taichi

AU - Soon, Aloysius

N1 - Funding Information: The authors gratefully acknowledge support from the Australian Partnership for Advanced Computing (APAC) and the Australian Centre for Advanced Computing and Communications (ac3). The authors thank Dr. K. Sawada and Dr. Y. Toda for their helpful comments, and diligent editing of the manuscript, and Prof. S. Ogata, Osaka University, for fruitful discussions about the ab initio calculations. T.A. acknowledges support from the Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency. A.S. acknowledges support from the Australian Research Council (ARC).

PY - 2009/4/15

Y1 - 2009/4/15

N2 - The formation enthalpies of the Z- and B1 MN-phases, where M = Cr, Fe, Nb, and V, were calculated using an ab initio computational method. The relative stability of the Z- and MN-phases was examined in the framework of the CALPHAD methodology. The analysis indicates that the Z-phase is more stable than the B1 MN-phase in the 9-12% Cr ferritic steels. This result is in agreement with experiments where the Z-phase is observed to dominate over the B1 MN-phases after long-term creep.

AB - The formation enthalpies of the Z- and B1 MN-phases, where M = Cr, Fe, Nb, and V, were calculated using an ab initio computational method. The relative stability of the Z- and MN-phases was examined in the framework of the CALPHAD methodology. The analysis indicates that the Z-phase is more stable than the B1 MN-phase in the 9-12% Cr ferritic steels. This result is in agreement with experiments where the Z-phase is observed to dominate over the B1 MN-phases after long-term creep.

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ER -

The Z-phase in 9-12% Cr ferritic steels: A phase stability analysis

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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