Compilation of the Results of Reversion Investigations of Al–1.87 at% Cu Alloys

Abstract

The results of the reversion experiments on Al–1.87 wt% Cu alloys, previously published by the authors, are summarized with the aim to test the different conceptions of reversion. In addition to the hitherto reported results selected two‐ and three‐step‐ageing processes are evaluated, which support the conceptions of the reversion in Al–1.87 wt% Cu alloys. According to the respective results the partial reversion in this alloy exhibits three features, i.e. the two hitherto known mechanisms, viz. the critical nuclear size and the growth, are effectively influenced by a third one. It is attributed to the different possible GPZ structures.