Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system

Z. K. Teng; F. Zhang; M. K. Miller; C. T. Liu; S. Huang; Y. T. Chou; R. H. Tien; Y. A. Chang; P. K. Liaw

doi:10.1016/j.matlet.2011.11.056

Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system

Z. K. Teng, F. Zhang, M. K. Miller, C. T. Liu, S. Huang, Y. T. Chou, R. H. Tien, Y. A. Chang, P. K. Liaw

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

24 Citations (Scopus)

Abstract

NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels. © 2011 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	36-40
Journal	Materials Letters
Volume	71
DOIs	https://doi.org/10.1016/j.matlet.2011.11.056
Publication status	Published - 15 Mar 2012

Research Keywords

Atom probe
Ferrites
Microstructure
Nanosize
Particles
Simulation and modeling

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title = "Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system",

abstract = "NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels. {\textcopyright} 2011 Elsevier B.V. All rights reserved.",

keywords = "Atom probe, Ferrites, Microstructure, Nanosize, Particles, Simulation and modeling",

author = "Teng, {Z. K.} and F. Zhang and Miller, {M. K.} and Liu, {C. T.} and S. Huang and Chou, {Y. T.} and Tien, {R. H.} and Chang, {Y. A.} and Liaw, {P. K.}",

year = "2012",

month = mar,

day = "15",

doi = "10.1016/j.matlet.2011.11.056",

language = "English",

volume = "71",

pages = "36--40",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system

AU - Teng, Z. K.

AU - Zhang, F.

AU - Miller, M. K.

AU - Liu, C. T.

AU - Huang, S.

AU - Chou, Y. T.

AU - Tien, R. H.

AU - Chang, Y. A.

AU - Liaw, P. K.

PY - 2012/3/15

Y1 - 2012/3/15

N2 - NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels. © 2011 Elsevier B.V. All rights reserved.

AB - NiAl-type precipitate-strengthened ferritic steels have been known as potential materials for the steam turbine applications. In this study, thermodynamic descriptions of the B2-NiAl type nano-scaled precipitates and body-centered-cubic (BCC) Fe matrix phase for four alloys based on the Fe-Al-Ni-Cr-Mo system were developed as a function of the alloy composition at the aging temperature. The calculated phase structure, composition, and volume fraction were validated by the experimental investigations using synchrotron X-ray diffraction and atom probe tomography. With the ability to accurately predict the key microstructural features related to the mechanical properties in a given alloy system, the established thermodynamic model in the current study may significantly accelerate the alloy design process of the NiAl-strengthened ferritic steels. © 2011 Elsevier B.V. All rights reserved.

KW - Atom probe

KW - Ferrites

KW - Microstructure

KW - Nanosize

KW - Particles

KW - Simulation and modeling

UR - http://www.scopus.com/inward/record.url?scp=84855166712&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84855166712&origin=recordpage

U2 - 10.1016/j.matlet.2011.11.056

DO - 10.1016/j.matlet.2011.11.056

M3 - RGC 21 - Publication in refereed journal

SN - 0167-577X

VL - 71

SP - 36

EP - 40

JO - Materials Letters

JF - Materials Letters

ER -

Thermodynamic modeling and experimental validation of the Fe-Al-Ni-Cr-Mo alloy system

Abstract

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