Abstract
Microstructure and mechanical properties of an extruded Mg96Zn1Y3 alloy have been investigated in the current study. Microstructure of as extruded alloy consists of α-Mg, long period stacking ordered (LPSO) phase and parallelepiped Y-riched phases, which exhibits a bimodal distribution of fine recrystallized and coarse elongated grains. Fine recrystallized grains with an average grain size of 1.5μm are mainly pinned by bulk LPSO-14H phase, inside which both LPSO-18R phase and LPSO-14H phase coexist. The extruded Mg96Zn1Y3 alloy exhibits a good combination of yield strength and elongation below 200°C, which is mainly attributed to LPSO phases, stronger texture and finer DRX grains. The main deformation is controlled by load transfer mechanism below 250°C, and deformation is controlled by non-basal dislocation movement between 300°C and 325°C. A good plasticity is attained at 350°C with an elongation of 140%. The flow stress behavior at 350°C is mainly controlled by non-basal slip accompanying with dynamic recrystallization and growth of grain.
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.
