Experimental and thermodynamic assessment of the Nd-Zr system

N. Mattern; Y. Yokoyama; A. Mizuno; J. H. Han; O. Fabrichnaya; T. Harada; S. Kohara; J. Eckert

doi:10.1016/j.calphad.2014.02.008

Experimental and thermodynamic assessment of the Nd-Zr system

N. Mattern, Y. Yokoyama, A. Mizuno, J. H. Han, O. Fabrichnaya, T. Harada, S. Kohara, J. Eckert

Cooperative Research and Development Center for Advanced Materials

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

4 Citations (Scopus)

Abstract

The phase equilibria of the binary Nd-Zr system have been investigated by combining the gas levitation technique with in situ high energy synchrotron X-ray diffraction at elevated temperatures. The Nd-Zr system is of a eutectic type. From the diffraction data the liquidus line was experimentally determined between 1300 and 1800 K. At T=1274±10 K the eutectic reaction L↔ bcc-Nd+bcc-Zr is evident. The eutectic composition x=7±2 at% Zr is determined from the analysis of the microstructure of cast alloys in accordance with the in situ diffraction data. Based on the experimental data the Nd-Zr phase diagram is presented and a self-consistent thermodynamic description is given.

Original language	English
Pages (from-to)	103-107
Number of pages	5
Journal	Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume	46
DOIs	https://doi.org/10.1016/j.calphad.2014.02.008
Publication status	Published - 2014 Sep

Keywords

CALPHAD
Conical nozzle levitation
In situ X-ray diffraction
Nd-Zr phase diagram
Thermodynamic assessment

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Computer Science Applications

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10.1016/j.calphad.2014.02.008

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title = "Experimental and thermodynamic assessment of the Nd-Zr system",

abstract = "The phase equilibria of the binary Nd-Zr system have been investigated by combining the gas levitation technique with in situ high energy synchrotron X-ray diffraction at elevated temperatures. The Nd-Zr system is of a eutectic type. From the diffraction data the liquidus line was experimentally determined between 1300 and 1800 K. At T=1274±10 K the eutectic reaction L↔ bcc-Nd+bcc-Zr is evident. The eutectic composition x=7±2 at% Zr is determined from the analysis of the microstructure of cast alloys in accordance with the in situ diffraction data. Based on the experimental data the Nd-Zr phase diagram is presented and a self-consistent thermodynamic description is given.",

keywords = "CALPHAD, Conical nozzle levitation, In situ X-ray diffraction, Nd-Zr phase diagram, Thermodynamic assessment",

author = "N. Mattern and Y. Yokoyama and A. Mizuno and Han, {J. H.} and O. Fabrichnaya and T. Harada and S. Kohara and J. Eckert",

note = "Funding Information: The authors wish to express their thanks to W. L{\"o}ser and I. Kaban for valuable discussions, B. Bartusch and B. Opitz for their technical assistance. Financial support of Tohoku University Sendai for the research stay at Institute for Materials Research of one of the authors (N.M.) is gratefully acknowledged. ",

year = "2014",

month = sep,

doi = "10.1016/j.calphad.2014.02.008",

language = "English",

volume = "46",

pages = "103--107",

journal = "Calphad: Computer Coupling of Phase Diagrams and Thermochemistry",

issn = "0364-5916",

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TY - JOUR

T1 - Experimental and thermodynamic assessment of the Nd-Zr system

AU - Mattern, N.

AU - Yokoyama, Y.

AU - Mizuno, A.

AU - Han, J. H.

AU - Fabrichnaya, O.

AU - Harada, T.

AU - Kohara, S.

AU - Eckert, J.

N1 - Funding Information: The authors wish to express their thanks to W. Löser and I. Kaban for valuable discussions, B. Bartusch and B. Opitz for their technical assistance. Financial support of Tohoku University Sendai for the research stay at Institute for Materials Research of one of the authors (N.M.) is gratefully acknowledged.

PY - 2014/9

Y1 - 2014/9

N2 - The phase equilibria of the binary Nd-Zr system have been investigated by combining the gas levitation technique with in situ high energy synchrotron X-ray diffraction at elevated temperatures. The Nd-Zr system is of a eutectic type. From the diffraction data the liquidus line was experimentally determined between 1300 and 1800 K. At T=1274±10 K the eutectic reaction L↔ bcc-Nd+bcc-Zr is evident. The eutectic composition x=7±2 at% Zr is determined from the analysis of the microstructure of cast alloys in accordance with the in situ diffraction data. Based on the experimental data the Nd-Zr phase diagram is presented and a self-consistent thermodynamic description is given.

AB - The phase equilibria of the binary Nd-Zr system have been investigated by combining the gas levitation technique with in situ high energy synchrotron X-ray diffraction at elevated temperatures. The Nd-Zr system is of a eutectic type. From the diffraction data the liquidus line was experimentally determined between 1300 and 1800 K. At T=1274±10 K the eutectic reaction L↔ bcc-Nd+bcc-Zr is evident. The eutectic composition x=7±2 at% Zr is determined from the analysis of the microstructure of cast alloys in accordance with the in situ diffraction data. Based on the experimental data the Nd-Zr phase diagram is presented and a self-consistent thermodynamic description is given.

KW - CALPHAD

KW - Conical nozzle levitation

KW - In situ X-ray diffraction

KW - Nd-Zr phase diagram

KW - Thermodynamic assessment

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U2 - 10.1016/j.calphad.2014.02.008

DO - 10.1016/j.calphad.2014.02.008

M3 - Article

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VL - 46

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EP - 107

JO - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

JF - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry

SN - 0364-5916

ER -

Experimental and thermodynamic assessment of the Nd-Zr system

Abstract

Keywords

ASJC Scopus subject areas

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