The origins of room temperature hardening of Al–Cu–Mg alloys


Starink, M.J., Gao, N. and Yan, J.L. (2004) The origins of room temperature hardening of Al–Cu–Mg alloys. Materials Science and Engineering A, 387-389, (1-2), 222-226. (doi:10.1016/j.msea.2004.01.085).

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Description/Abstract

The most commonly cited mechanisms for the rapid age hardening of Al–Cu–Mg alloys at about 100–200 °C are hardening by Guinier–Preston B zone formation, formation of Cu–Mg co-clusters and a dislocation–solute interaction mechanism. New experiments on ageing–deformation–ageing cycles at room temperature indicate that no substantial additional age hardening occurs with the addition of deformation to the cycle, and hence, a dislocation–solute interaction mechanism appears unlikely. Instead, strengthening due to modulus hardening generated by the difference in shear modulus of Cu–Mg co-clusters and matrix is proposed as the main strengthening mechanism for room temperature hardening.

Item Type: Article
ISSNs: 0921-5093 (print)
Related URLs:
Keywords: clusters, calorimetry, precipitation, Al–Cu–Mg alloys, natural ageing
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 22850
Date Deposited: 23 Mar 2006
Last Modified: 27 Mar 2014 18:12
URI: http://eprints.soton.ac.uk/id/eprint/22850

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