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Microsegregation in Al-Cu Alloys

By E. C. Kurum, Hongbiao Dong and J. D. Hunt

Abstract

This paper was published in Metallurgical and Materials Transactions A, 2005, Volume 36, Issue 11, pp. 3103-3110 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.A comparison has been made between the amount of microsegregation predicted by a numerical model and that found experimentally in Al-Cu alloys varying in composition between 1 and 8 wt pct Cu. A depleted region was predicted and observed experimentally near the Al[subscript 2]Cu. The depleted region was formed below the eutectic temperature and had a significant effect on the ordered composition-fraction plots, particularly for high alloy compositions. Although the fit between experiment and theory was reasonably good, it was concluded that it was necessary to propose that local equilibrium was not maintained between the phases in the solid-state reactions.Peer-reviewedPublisher Versio

Publisher: Springer Verlag on behalf of ASM International
Year: 2005
DOI identifier: 10.1007/s11661-005-0082-7
OAI identifier: oai:lra.le.ac.uk:2381/1905
Journal:

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