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).
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.
|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
|Date Deposited:||23 Mar 2006|
|Last Modified:||25 Apr 2013 11:23|
|Contributors:||Starink, M.J. (Author)
Gao, N. (Author)
Yan, J.L. (Author)
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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