Experimental constraints on the phase diagram of elemental zirconium

Jianzhong Zhang; Yusheng Zhao; Cristian Pantea; Jiang Qian; Luke L. Daemen; Paulo A. Rigg; Robert S. Hixson; Carl W. Greeff; George T. Gray; Yunpeng Yang; Liping Wang; Yanbin Wang; Takeyuki Uchida

doi:10.1016/j.jpcs.2005.03.004

Experimental constraints on the phase diagram of elemental zirconium

Jianzhong Zhang, Yusheng Zhao, Cristian Pantea, Jiang Qian, Luke L. Daemen, Paulo A. Rigg, Robert S. Hixson, Carl W. Greeff, George T. Gray, Yunpeng Yang, Liping Wang, Yanbin Wang, Takeyuki Uchida

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80 Scopus citations

Abstract

The phase diagram of zirconium metal has been studied using synchrotron X-ray diffraction and time-of-flight neutron scattering at temperatures and pressures up to 1273 K and 17 GPa. The equilibrium phase boundary of the α-ω transition has a dT/dP slope of 473 K/GPa, and the extrapolated transition pressure at ambient temperature is located at 3.4 GPa. For the ω-β transition, the phase boundary has a negative dT/dP slope of 15.5 K/GPa between 6.4 and 15.3 GPa, which is substantially smaller than a previously reported value of -39±5 K/GPa in the pressure range of 32-35 GPa. This difference indicates a significant curvature of the phase boundary between 15.3 and 35 GPa. The α-ω-β triple point was estimated to be at 4.9 GPa and 953 K, which is comparable to previous results obtained from a differential thermal analysis. Except for the three known crystalline forms, the β phase of zirconium metal was found to possess an extraordinary glass forming ability at pressures between 6.4 and 8.6 GPa. This transformation leads to a limited stability field for the β phase in the pressure range of 6-16 GPa and to complications of high-temperature portion of phase diagram for zirconium metal.

Original language	English
Pages (from-to)	1213-1219
Number of pages	7
Journal	Journal of Physics and Chemistry of Solids
Volume	66
Issue number	7
DOIs	https://doi.org/10.1016/j.jpcs.2005.03.004
State	Published - Jul 2005
Externally published	Yes

Funding

This work was performed under the auspices of the US Department of Energy (DOE) under contract W-7405-ENG-36 with the University of California. The experimental work was carried out at the beamlines X17B2 of National Synchrotron Light Source of Brookhaven National Laboratory, which is supported by the Consortium for Materials Properties Research in Earth Sciences (COMPRES) under NSF Cooperative Agreement EAR 01-35554, and at the beamline 13-BM of Advance Photon Source of Argonne National Laboratory, which is supported by the National Science Foundation—Earth Sciences (EAR-0217473), Department of Energy—Geosciences (DE-FG02-94ER14466) and the State of Illinois. Use of the APS was supported by the US Department of Energy, Basic Energy Sciences, and Office of Energy Research, under Contract No. W-31-109-Eng-38.

Funders	Funder number
National Science Foundation—Earth Sciences	EAR-0217473
Office of Energy Research	W-31-109-Eng-38
National Science Foundation	EAR 01-35554
U.S. Department of Energy	W-7405-ENG-36, DE-FG02-94ER14466
University of California
Basic Energy Sciences

Keywords

A. Amorphous materials
A. Metals
C. High pressure
C. X-ray diffraction
D. Phase transitions

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10.1016/j.jpcs.2005.03.004

Cite this

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title = "Experimental constraints on the phase diagram of elemental zirconium",

abstract = "The phase diagram of zirconium metal has been studied using synchrotron X-ray diffraction and time-of-flight neutron scattering at temperatures and pressures up to 1273 K and 17 GPa. The equilibrium phase boundary of the α-ω transition has a dT/dP slope of 473 K/GPa, and the extrapolated transition pressure at ambient temperature is located at 3.4 GPa. For the ω-β transition, the phase boundary has a negative dT/dP slope of 15.5 K/GPa between 6.4 and 15.3 GPa, which is substantially smaller than a previously reported value of -39±5 K/GPa in the pressure range of 32-35 GPa. This difference indicates a significant curvature of the phase boundary between 15.3 and 35 GPa. The α-ω-β triple point was estimated to be at 4.9 GPa and 953 K, which is comparable to previous results obtained from a differential thermal analysis. Except for the three known crystalline forms, the β phase of zirconium metal was found to possess an extraordinary glass forming ability at pressures between 6.4 and 8.6 GPa. This transformation leads to a limited stability field for the β phase in the pressure range of 6-16 GPa and to complications of high-temperature portion of phase diagram for zirconium metal.",

keywords = "A. Amorphous materials, A. Metals, C. High pressure, C. X-ray diffraction, D. Phase transitions",

author = "Jianzhong Zhang and Yusheng Zhao and Cristian Pantea and Jiang Qian and Daemen, {Luke L.} and Rigg, {Paulo A.} and Hixson, {Robert S.} and Greeff, {Carl W.} and Gray, {George T.} and Yunpeng Yang and Liping Wang and Yanbin Wang and Takeyuki Uchida",

year = "2005",

month = jul,

doi = "10.1016/j.jpcs.2005.03.004",

language = "English",

volume = "66",

pages = "1213--1219",

journal = "Journal of Physics and Chemistry of Solids",

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publisher = "Elsevier",

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TY - JOUR

T1 - Experimental constraints on the phase diagram of elemental zirconium

AU - Zhang, Jianzhong

AU - Zhao, Yusheng

AU - Pantea, Cristian

AU - Qian, Jiang

AU - Daemen, Luke L.

AU - Rigg, Paulo A.

AU - Hixson, Robert S.

AU - Greeff, Carl W.

AU - Gray, George T.

AU - Yang, Yunpeng

AU - Wang, Liping

AU - Wang, Yanbin

AU - Uchida, Takeyuki

PY - 2005/7

Y1 - 2005/7

N2 - The phase diagram of zirconium metal has been studied using synchrotron X-ray diffraction and time-of-flight neutron scattering at temperatures and pressures up to 1273 K and 17 GPa. The equilibrium phase boundary of the α-ω transition has a dT/dP slope of 473 K/GPa, and the extrapolated transition pressure at ambient temperature is located at 3.4 GPa. For the ω-β transition, the phase boundary has a negative dT/dP slope of 15.5 K/GPa between 6.4 and 15.3 GPa, which is substantially smaller than a previously reported value of -39±5 K/GPa in the pressure range of 32-35 GPa. This difference indicates a significant curvature of the phase boundary between 15.3 and 35 GPa. The α-ω-β triple point was estimated to be at 4.9 GPa and 953 K, which is comparable to previous results obtained from a differential thermal analysis. Except for the three known crystalline forms, the β phase of zirconium metal was found to possess an extraordinary glass forming ability at pressures between 6.4 and 8.6 GPa. This transformation leads to a limited stability field for the β phase in the pressure range of 6-16 GPa and to complications of high-temperature portion of phase diagram for zirconium metal.

AB - The phase diagram of zirconium metal has been studied using synchrotron X-ray diffraction and time-of-flight neutron scattering at temperatures and pressures up to 1273 K and 17 GPa. The equilibrium phase boundary of the α-ω transition has a dT/dP slope of 473 K/GPa, and the extrapolated transition pressure at ambient temperature is located at 3.4 GPa. For the ω-β transition, the phase boundary has a negative dT/dP slope of 15.5 K/GPa between 6.4 and 15.3 GPa, which is substantially smaller than a previously reported value of -39±5 K/GPa in the pressure range of 32-35 GPa. This difference indicates a significant curvature of the phase boundary between 15.3 and 35 GPa. The α-ω-β triple point was estimated to be at 4.9 GPa and 953 K, which is comparable to previous results obtained from a differential thermal analysis. Except for the three known crystalline forms, the β phase of zirconium metal was found to possess an extraordinary glass forming ability at pressures between 6.4 and 8.6 GPa. This transformation leads to a limited stability field for the β phase in the pressure range of 6-16 GPa and to complications of high-temperature portion of phase diagram for zirconium metal.

KW - A. Amorphous materials

KW - A. Metals

KW - C. High pressure

KW - C. X-ray diffraction

KW - D. Phase transitions

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SN - 0022-3697

VL - 66

SP - 1213

EP - 1219

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 7

ER -

Experimental constraints on the phase diagram of elemental zirconium

Abstract

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Keywords

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