Abstract
The precipitation of intermetallic compounds of transition metals during aging of the Al–5.8%Cu–0.3%Mn–0.1%Zr alloy has been studied using DSC, resistometry, X-ray and transmission electron microscopy. In these age hardenable alloys, the nanoscale metastable Θ″ and Θ′ phases of the Al2Cu compound are the main strengthening phases, which are formed at low temperature aging of T < 300 °C. The effect of high-temperature treatment (homogenization, heating for quenching, heating for the elimination of internal stresses, etc.) on the aging with the precipitation of strengthening phases has been investigated.
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