|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Magnesium Technology 2016
||Creep of a Mg-Zn-Y Alloy at Elevated Temperatures
||Weiwei Hu, Zhiqing Yang, Jianfang Liu, Hengqiang Ye
|On-Site Speaker (Planned)
Mg alloys containing long-period stacking ordered (LPSO) structures have superior strength at elevated temperatures, which makes them potential creep resistant materials. We have studied the creep behavior of a Mg97Zn1Y2 (at.%) alloy. No creep strain was detected for the Mg97Zn1Y2 alloy at 423K under a tensile stress of 70MPa in 100h. The creep strains were measured to be about 0.03% and 0.2% at 473K and 523K, respectively, under a tensile stress of 70MPa in 100h, showing excellent creep resistance. The microstructures were characterized by transmission electron microscopy (TEM) and scanning-transmission electron microscopy(STEM) techniques, in order to understand the creep deformation behavior and microstructural origin of the excellent creep resistance of this alloy. LPSO phase was found playing an important role in the alloy's creep resistance. Suzuki segregation in the Mg matrix has also important contribution to the alloy's excellent creep resistance at elevated temperatures.
||Planned: A combination print-CD volume