Interfacial tension, wetting and nucleation in Al-Bi and Al-Pb monotectic alloys

被引：80

作者：

Kaban, I. ^{[1
]}

Koehler, M. ^{[2
]}

Ratke, L. ^{[2
]}

Hoyer, W. ^{[3
]}

Mattern, N. ^{[1
]}

Eckert, J. ^{[1
,4
]}

Greer, A. L. ^{[5
]}

机构：

[1] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany

[2] Deutsch Zentrum Luft & Raumfahrt, Inst Mat Phys Weltraum, D-51170 Cologne, Germany

[3] Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany

[4] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

[5] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

ACTA MATERIALIA | 2011年 / 59卷 / 18期

关键词：

Al-Bi; Al-Pb; Interfacial tension; Wetting; Nucleation; GRAIN-REFINEMENT; CONTACT ANGLES; SOLIDIFICATION; ALUMINUM; SYSTEMS; PARTICLES; TI;

D O I：

10.1016/j.actamat.2011.07.031

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The key physical parameters for nucleation of a second liquid phase in Al-Bi and Al-Pb monotectic liquids have been measured. The density of coexisting liquid phases, the interfacial tension between them, and the contact angle of the liquid liquid interface on ZrO2 and TiB2 ceramics have been determined as a function of temperature. The contact angle data suggest that Al2O3, ZrO2, and TiB2 particles can act as centres for heterogeneous nucleation of the minority liquid phase in Al-Pb and Al-Bi immiscible alloys. Casting experiments on the alloy Al91Pb9 (wt.%) show that the maximum size of the liquid phase droplets decreases, and their population increases, upon addition of inoculants. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：6880 / 6889

页数：10

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