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), 277-280. (doi:10.1016/S0921-5093(97)00460-7).
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Description/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.
| Item Type: | Article |
|---|---|
| ISSNs: | 0921-5093 (print) |
| Related URLs: | |
| Keywords: | Al–Si, precipitation, isothermal calorimetry |
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences |
| Item ID: | 21673 |
| Date Deposited: | 13 Dec 2006 |
| Last Modified: | 01 Jun 2011 11:08 |
| Contributors: | Starink, M.J. (Author) Zahra, A.-M. (Author) |
| Date: | 1998 |
| Status: | Published |
| Contact Email Address: | M.J.Starink@soton.ac.uk |
| URI: | http://eprints.soton.ac.uk/id/eprint/21673 |
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