Application of the cluster/site approximation to fcc phases in the Ni-Al-Cr-Re system

J. Zhu; W. Cao; Y. Yang; F. Zhang; S. Chen; W. A. Oates; Y. A. Chang

doi:10.1016/j.actamat.2007.04.019

Application of the cluster/site approximation to fcc phases in the Ni-Al-Cr-Re system

J. Zhu, W. Cao, Y. Yang, F. Zhang, S. Chen, W. A. Oates, Y. A. Chang

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

8 Scopus citations

Abstract

The cluster/site approximation (CSA) has been used to model the face-centered cubic (fcc) phases (disordered γ with the A1 structure and ordered γ′ with the L1₂ structure) in the Ni-Al-Cr-Re quaternary system. The CSA takes into account short-range order (SRO), which is vital for describing order/disorder transitions. The approximation possesses computational advantages over the cluster variation method while offering comparable accuracy in the calculation of multi-component phase diagrams. The CSA-calculated phase diagrams are in good accord with the experimental data. In addition, the fcc metastable phase diagrams calculated by using the CSA show the expected ordering/disordering behavior and phase relationships.

Original language	English
Pages (from-to)	4545-4551
Number of pages	7
Journal	Acta Materialia
Volume	55
Issue number	13
DOIs	https://doi.org/10.1016/j.actamat.2007.04.019
State	Published - Aug 2007
Externally published	Yes

Funding

Financial support from the AFOSR Grant No. F49620-03-1-0083 is gratefully acknowledged.

Funders	Funder number
Air Force Office of Scientific Research

Keywords

Cluster/site approximation
Nickel alloys
Order-disorder phenomena
Phase diagram
Thermodynamics

Access to Document

10.1016/j.actamat.2007.04.019

Cite this

@article{a1735662453e4cc5b48752ff885804fb,

title = "Application of the cluster/site approximation to fcc phases in the Ni-Al-Cr-Re system",

abstract = "The cluster/site approximation (CSA) has been used to model the face-centered cubic (fcc) phases (disordered γ with the A1 structure and ordered γ′ with the L12 structure) in the Ni-Al-Cr-Re quaternary system. The CSA takes into account short-range order (SRO), which is vital for describing order/disorder transitions. The approximation possesses computational advantages over the cluster variation method while offering comparable accuracy in the calculation of multi-component phase diagrams. The CSA-calculated phase diagrams are in good accord with the experimental data. In addition, the fcc metastable phase diagrams calculated by using the CSA show the expected ordering/disordering behavior and phase relationships.",

keywords = "Cluster/site approximation, Nickel alloys, Order-disorder phenomena, Phase diagram, Thermodynamics",

author = "J. Zhu and W. Cao and Y. Yang and F. Zhang and S. Chen and Oates, {W. A.} and Chang, {Y. A.}",

year = "2007",

month = aug,

doi = "10.1016/j.actamat.2007.04.019",

language = "English",

volume = "55",

pages = "4545--4551",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier",

number = "13",

}

TY - JOUR

T1 - Application of the cluster/site approximation to fcc phases in the Ni-Al-Cr-Re system

AU - Zhu, J.

AU - Cao, W.

AU - Yang, Y.

AU - Zhang, F.

AU - Chen, S.

AU - Oates, W. A.

AU - Chang, Y. A.

PY - 2007/8

Y1 - 2007/8

N2 - The cluster/site approximation (CSA) has been used to model the face-centered cubic (fcc) phases (disordered γ with the A1 structure and ordered γ′ with the L12 structure) in the Ni-Al-Cr-Re quaternary system. The CSA takes into account short-range order (SRO), which is vital for describing order/disorder transitions. The approximation possesses computational advantages over the cluster variation method while offering comparable accuracy in the calculation of multi-component phase diagrams. The CSA-calculated phase diagrams are in good accord with the experimental data. In addition, the fcc metastable phase diagrams calculated by using the CSA show the expected ordering/disordering behavior and phase relationships.

AB - The cluster/site approximation (CSA) has been used to model the face-centered cubic (fcc) phases (disordered γ with the A1 structure and ordered γ′ with the L12 structure) in the Ni-Al-Cr-Re quaternary system. The CSA takes into account short-range order (SRO), which is vital for describing order/disorder transitions. The approximation possesses computational advantages over the cluster variation method while offering comparable accuracy in the calculation of multi-component phase diagrams. The CSA-calculated phase diagrams are in good accord with the experimental data. In addition, the fcc metastable phase diagrams calculated by using the CSA show the expected ordering/disordering behavior and phase relationships.

KW - Cluster/site approximation

KW - Nickel alloys

KW - Order-disorder phenomena

KW - Phase diagram

KW - Thermodynamics

UR - http://www.scopus.com/inward/record.url?scp=34250815065&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2007.04.019

DO - 10.1016/j.actamat.2007.04.019

M3 - Article

AN - SCOPUS:34250815065

SN - 1359-6454

VL - 55

SP - 4545

EP - 4551

JO - Acta Materialia

JF - Acta Materialia

IS - 13

ER -

Application of the cluster/site approximation to fcc phases in the Ni-Al-Cr-Re system

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this