Measurement of anisotropy of crystal-melt interfacial energy for a binary Al-Cu alloy

被引：102

作者：

Liu, S ^{[1
]}

Napolitano, RE ^{[1
]}

Trivedi, R ^{[1
]}

机构：

[1] Iowa State Univ, Ames Lab, US DOE, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

ACTA MATERIALIA | 2001年 / 49卷 / 20期

基金：

美国国家航空航天局;

关键词：

interface; microstructure; aluminium alloys; anisotropy;

D O I：

10.1016/S1359-6454(01)00306-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The anisotropy of solid-liquid interfacial energy for an Al-4.0 wt% Cu alloy is determined through measurement of equilibrium shape. Measurements are performed using a fine dispersion of liquid particles entrained within a single-crystal single-phase solid. Specimens are sectioned normal to the (100) direction in the continuous phase, and the droplets are observed to exhibit four-fold symmetry on this plane. The radial variation on this plane is measured using optical and chemical techniques, and the normalized anisotropy parameter is determined to be 0.98%. Equilibrium conditions are validated, and quench effects are investigated using microchemical analysis techniques. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd, All rights reserved.

引用

页码：4271 / 4276

页数：6

共 21 条

[1]

BASTERFIELD J, 1969, CAN METALL QUART, V8, P131

[2]

CHADWICK GA, 1969, SOLIDIFICATION, P99

[3]

FRANKLIN UM, 1969, CAN METALL QUART, V8, P145

[4] EFFECTS OF CRYSTAL MELT INTERFACIAL ENERGY ANISOTROPY ON DENDRITIC MORPHOLOGY AND GROWTH-KINETICS [J].

GLICKSMAN, ME ;

SINGH, NB .

JOURNAL OF CRYSTAL GROWTH, 1989, 98 (03) :277-284

[5] THE MEASUREMENT OF SOLID-LIQUID SURFACE ENERGIES IN THE AL-CU, AL-SI AND PB-SN SYSTEMS [J].

GUNDUZ, M ;

HUNT, JD .

ACTA METALLURGICA, 1985, 33 (09) :1651-1672

[6] EXPERIMENTAL DETERMINATION OF KINETICS OF SOLID-LIQUID INTERFACES IN TRANSPARENT MATERIALS USING TEMPERATURE-GRADIENT ZONE MIGRATION [J].

JONES, DRH ;

CHADWICK, GA .

PHILOSOPHICAL MAGAZINE, 1971, 24 (192) :1327-&

[7] Quantitative phase-field modeling of dendritic growth in two and three dimensions [J].

Karma, A ;

Rappel, WJ .

PHYSICAL REVIEW E, 1998, 57 (04) :4323-4349

[8] Critical role of crystalline anisotropy in the stability of cellular array structures in directional solidification [J].

Kopczynski, P ;

Rappel, WJ ;

Karma, A .

PHYSICAL REVIEW LETTERS, 1996, 77 (16) :3387-3390

[9] INSTABILITIES AND PATTERN-FORMATION IN CRYSTAL-GROWTH [J].

LANGER, JS .

REVIEWS OF MODERN PHYSICS, 1980, 52 (01) :1-28

[10] EQUILIBRIUM SHAPES OF SMALL LIQUID DROPLETS IN SOLID-LIQUID PHASE MIXTURES - METALLIC HCP AND METALLOID SYSTEMS [J].

MILLER, WA ;

CHADWICK, GA .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 312 (1509) :257-&

← 1 2 3 →