Severe plastic deformation processing of Al-Cu-Li alloy for enhancing strength while maintaining ductility

摘要

An Al-Cu-Li alloy has been processed by equal channel angular pressing (ECAP) to compare the influence of strain rate and pro-cessing temperature, together with subsequent annealing treatment, on the strength and ductility of the alloy. High strength with rea-sonable ductility can be found under conditions where fine precipitates enhance strength but also delay strain localization and fracture.