Experimental and thermodynamic assessment of the Nd-Zr system

N. Mattern; Yoshihiko 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, Yoshihiko 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 1

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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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 Yoshihiko Yokoyama and A. Mizuno and Han, {J. H.} and O. Fabrichnaya and T. Harada and S. Kohara and J. Eckert",

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

AU - Mattern, N.

AU - Yokoyama, Yoshihiko

AU - Mizuno, A.

AU - Han, J. H.

AU - Fabrichnaya, O.

AU - Harada, T.

AU - Kohara, S.

AU - Eckert, J.

PY - 2014/9/1

Y1 - 2014/9/1

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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