Quantification of overaging hardening kinetics of aluminum alloys |
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| Authors: | W. Sha A. E. Long |
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| Affiliation: | (1) the Metals Research Group, School of Civil Engineering, The Queen’s University of Belfast, BT7 1NN Belfast, United Kingdom |
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| Abstract: | The overaging hardening kinetics in several aluminum alloys has been quantified, based on a relation between hardness and time for precipitation-hardened alloys. The relation takes into account precipitate coarsening and Orowan bowing mechanisms. Hardness-time curves from literature data for Al-2.5Cu-1.5Mg-(Si,Ag) (wt pct) alloys at 200° C and for an Al-1.23Mg-1.64Cu-6.15Zn (wt pct) alloy at 120° C are analysed, which are found to obey the overaging kinetics relation. |
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