Abstract
The mechanical properties of Zr-bearing aluminum-based alloys directly depend on heat treatment that yields precipitation of the L12-Al3Zr phase. Choosing an effective treatment leads to high density of nanoscale dispersoids and improves the strengthening effect of zirconium. The precipitation effect, recrystallization behavior, internal friction, mechanical properties, and superplasticity were studied in an Al-3wt.%Mg-0.25 wt%Zr alloy subjected to different heat treatment regimes. Temperature dependence internal friction was used to accurately estimate the recrystallization kinetics in the samples. The study revealed a strong influence of the annealing regime on the parameters of L12-structured nanoprecipitates and recovery/recrystallization behavior. Due to the high-density distribution of nanoprecipitates, an increased recrystallization resistance, enhanced strength, and superplasticity were achieved in pre-annealed sheets in a two-step regime with a long-time low-temperature step. The contributions of various strengthening mechanisms were estimated .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
