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Precipitation in a high silicon Al-Si alloy studied by isothermal calorimetry

Starink, M.J. and Zahra, A.-M. (1998) Precipitation in a high silicon Al-Si alloy studied by isothermal calorimetry Materials Science and Engineering: A, 241, (1-2), pp. 277-280. (doi:10.1016/S0921-5093(97)00460-7).

Record type: Article

Abstract

The precipitation in an Al–6mass%Si alloy was investigated by isothermal calorimetry. Three types of heat treatment were studied and precipitation rates in the samples increase in the order: Furnace cooled, ice-water quenched (IWQ) and naturally aged after IWQ. With the aid of a novel model for nucleation and growth reactions the measured exothermic heat flow is interpreted in terms of two processes: Growth of large undissolved Si particles and growth of pre-existing nuclei. The activation energies for precipitation are EA=0.89 eV for IWQ samples and EA=0.94 eV for furnace cooled samples.

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More information

Published date: 1998
Keywords: Al–Si, precipitation, isothermal calorimetry
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 21673
URI: http://eprints.soton.ac.uk/id/eprint/21673
ISSN: 0921-5093
PURE UUID: def06783-dc19-4e54-9b11-df816e476896

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Date deposited: 13 Dec 2006
Last modified: 17 Jul 2017 16:25

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Contributors

Author: M.J. Starink
Author: A.-M. Zahra

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