Abstract
In this study, we combine dynamic strain aging and dynamic precipitation by simple pre-deformation instead of usual artificial aging in a high Mg-content Al–Mg–Zn based crossover alloy. With this strategy, both the dislocations and shearable precipitates are manipulated to concurrently increase the flow stress and strain hardening rate, equipping the alloy with not only significantly increased yield strength (410 MPa) and ultimate tensile strength (609 MPa) but also excellent ductility (22%). The experimental observation here provides an insight into the development of new generation Al alloys with an exceptional strength-ductility combination.
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