A benchmark solidification experiment on an Sn-10%wtBi alloy

被引：30

作者：

Quillet, G. ^{[1
]}

Ciobanas, A. ^{[1
]}

Lehmann, P. ^{[1
]}

Fautrelle, Y. ^{[1
]}

机构：

[1] CNRS, INPG, UJF,EPM Lab, F-38402 St Martin Dheres, France

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2007年 / 50卷 / 3-4期

关键词：

solidification; metallic alloys; benchmark experiment;

D O I：

10.1016/j.ijheatmasstransfer.2006.07.030

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solidification of a 90/10%wt tin-bismuth alloy has been analyzed experimentally for a 50 x 60 x 10 min ingot. The heat flux was extracted from one vertical side of the ingot. Instantaneous temperature measurements were performed using a lattice of 25 thermocouples located on one of the large sides of the sample. The temperature versus time curve exhibits the classical pseudo-plateau as well the eutectic step. A post-mortem analysis of the samples was carried out. Solidification is almost columnar over the range of solidification rates considered. Two types of segregations are observed. X-ray analysis reveals the development of segregated channels near the cold wall. Analysis of the solute composition shows the existence of significant macro-segregations. The locations of the segregations are confirmed by the measurements of the eutectic fraction. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：654 / 666

页数：13

共 16 条

[1]

AUBURTIN P, 1997, SOLIDIFICATION P 199, P336

[2] Convection and channel formation in solidifying Pb-Sn alloys [J].

Bergman, MI ;

Fearn, DR ;

Bloxham, J ;

Shannon, MC .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (3A) :859-866

[3]

Brandes E.A., 1992, SMITHELL METALS REFE

[4]

GAU C, 1986, T ASME, V108, P174

[5] ON NATURE OF FRECKLES IN NICKEL BASE SUPERALLOYS [J].

GIAMEI, AF ;

KEAR, BH .

METALLURGICAL TRANSACTIONS, 1970, 1 (08) :2185-&

[6] OBSERVATIONS OF INGOT MACROSEGREGATION ON MODEL SYSTEMS [J].

HEBDITCH, DJ ;

HUNT, JD .

METALLURGICAL TRANSACTIONS, 1974, 5 (07) :1557-1564

[7]

Hultgren A., 1973, Scand. J. Metall., V2, P217

[8]

Massalski T. B., 1986, BINARY ALLOY PHASE D, V1, P981

[9]

MCDONALD RJ, 1969, T METALL SOC AIME, V245, P1993

[10] The breakdown of single-crystal solidification in high refractory nickel-base alloys [J].

Pollock, TM ;

Murphy, WH .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (04) :1081-1094

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