Direct Chill Casting of Aluminum Alloys: Modeling and Experiments on Industrial Scale Ingots-Reference-Cited by-同舟云学术

Direct Chill Casting of Aluminum Alloys: Modeling and Experiments on Industrial Scale Ingots

Published:2002-09-11 Issue:5 Volume:124 Page:947-953
ISSN:0022-1481
Container-title:Journal of Heat Transfer
language:en
Short-container-title:

Author:

Vreeman Christopher J.¹,Schloz J. David²,Krane Matthew John M.³

Affiliation:

1. Capstone Turbine Corporation, 21211 Nordhoff Street, Chatsworth, CA 91311

2. Wagstaff Engineering, 3910 North Flora Road, Spokane, WA 99216

3. School of Materials Engineering, Purdue University, West Lafayette, IN 47907

Abstract

A continuum mixture model of the direct chill casting process is compared to experimental results from industrial scale aluminum billets. The model, which includes the transport of free-floating solid particles, can simulate the effect of a grain refiner on macrosegregation and fluid flow. It is applied to an Al-6 wt% Cu alloy and the effect of grain refiner on macrosegregation, sump profile, and temperature fields are presented. Two 45 cm diameter billets were cast under production conditions with and without grain refiner. Temperature and composition measurements and sump profiles are compared to the numerical results. The comparison shows some agreement for the grain refined case. It is believed that an incorrect assumption about the actual grain structure prevents good agreement in the non-grain refined billet.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

http://asmedigitalcollection.asme.org/heattransfer/article-pdf/124/5/947/5912886/947_1.pdf

Reference23 articles.

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2. Yu, H., and Granger, D. A., 1986, “Macrosegregation in Aluminum Alloy Ingot Cast by the Semicontinuous Direct Chill (DC) Method,” in Aluminum Alloys-Their Physical and Mechanical Properties, EMAS, United Kingdom, pp. 17–29.

3. Chu, M. G., and Jacoby, J. E., 1990, “Macrosegregation Characteristics of Commercial Size Aluminum Alloy Ingot Cast by the Direct Chill Method,” in Light Metals 1990, C. M. Bickert, ed., TMS, pp. 925–930.

4. Dorward, R. C., and Beerntsen, D. J., 1990, “Effects of Casting Practice on Macrosegregation and Microstructure of 2024 Alloy Billet,” in Light Metals 1990, C. M. Bickert, ed., TMS, pp. 919–924.

5. Gariepy, B., and Caron, Y., 1991, “Investigation in the Effects of Casting Parameters on the Extent of Centerline Macrosegregation in DC Cast Sheet Ingots,” in Light Metals 1991, E. L. Rooy, ed., TMS, pp. 961–971.

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