Metastable phase selection from undercooled Zr77Rh23 liquid alloys

被引：9

作者：

Johnson, M. L. ^{[1
,2
,3
]}

Gibbons, P. C. ^{[1
,2
]}

Vogt, A. J. ^{[4
]}

Kelton, K. F. ^{[1
,2
]}

机构：

[1] Washington Univ, Dept Phys, 1 Brookings Dr, St Louis, MO 63130 USA

[2] Washington Univ, Inst Mat Sci & Engn, 1 Brookings Dr, St Louis, MO 63130 USA

[3] Johns Hopkins Univ, Appl Phys Lab, 11100 Johns Hopkins Rd, Laurel, MD 20723 USA

[4] Oak Ridge Natl Lab, Instrument & Source Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 725卷

基金：

美国国家科学基金会;

关键词：

Metastable phase; Crystal structure; Electrostatic levitation; Hypercooling; DIFFERENTIAL SCANNING CALORIMETRY; RH METALLIC GLASSES; ZIRCONIUM; SUPERCONDUCTIVITY; SOLIDIFICATION;

D O I：

10.1016/j.jallcom.2017.07.241

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

From measurements of X-ray and neutron scattering of electrostatically levitated Zr77Rh23 liquids, a variety of metastable crystallization behavior was observed. The metastable phase selection in deeply undercooled liquid droplets is characterized and their crystallization pathways discussed. A metastable phase previously identified as a primary devitrification product from the metallic glass formed when undercooling was maximized to near the hypercooling limit. The direct formation of alpha-Zr and the equilibrium C16 phase as well as a newly discovered Zr5Rh3 (Mg5Si3-type) phase are also reported. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：1217 / 1222

页数：6

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