Precipitation kinetics of an Al-15%Mg alloy studied by microcalorimetry and TEM


Starink, M.J. and Zahra, A.-M. (1996) Precipitation kinetics of an Al-15%Mg alloy studied by microcalorimetry and TEM. In, Driver, J.H., Dubost, B., Durand, F, Fougeres, R., Guyot, P., Sainfort, P. and Suery, M. (eds.) Aluminium Alloys: Their Physical and Mechanical Properties, Parts 1-3. 5th International Conference on Aluminium Alloys, Their Physical and Mechanical Properties (ICAA5) Switzerland, Trans Tech, 795-800. (Materials Science Forum 217-222).

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Description/Abstract

The kinetics of beta prime formation from supersaturated Al-15mass%Mg solid solutions was studied by micro-calorimetry and transmission electron microscopy (TEM). It is shown that the transformation can not be described by the commonly used equation: d alfa / dt = f(alfa) k(T). The function f(alfa) is different at different temperatures. Apparent activation energies decrease with amount transformed from 1.07 eV to 0.7 eV. These findings are discussed in terms of overlapping of the nucleation and growth processes for beta prime.

Item Type: Book Section
Additional Information: Series ISSN 0255-5476
ISBNs: 0878497323 (hardback)
Related URLs:
Keywords: Al-Mg, precipitation, kinetics, calorimetry, activation energy
Subjects: T Technology > TN Mining engineering. Metallurgy
Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 19104
Date Deposited: 15 Dec 2005
Last Modified: 27 Mar 2014 18:08
URI: http://eprints.soton.ac.uk/id/eprint/19104

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