Microstructure and Mechanical Properties of an Extruded Mg–2Dy–0.5Zn Alloy

  • Bi G
  • Fang D
  • Zhang W
 et al. 
  • 3


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.


Microstructure and mechanical properties of an extruded Mg–2Dy–0.5Zn (at.%) alloy during isothermal ageing at 180 • C were investigated. Microstructure of the as-extruded alloy is mainly composed of α-Mg phase, 14H long period stacking order (LPSO) phase and small amounts of (Mg, Zn) x Dy particle phases. During ageing, the 14H LPSO phase forms and develops and its volume fraction increases with increasing ageing time. Tensile test showed that the peak-aged alloy exhibits similar yield and ultimate tensile strengths and elongation to failure at room temperature, 100 • C and 200 • C, but excellent elevated temperature strengths at 300 • C as compared to the as-extruded and over-aged alloys. The analysis showed that the excellent elevated temperature strengths of the peak-aged alloy are attributed to the LPSO phase strengthening and the grain refinement strengthening, and the role of the LPSO strengthening is related to not only its amount, but also its morphology.

Author-supplied keywords

  • Long period stacking ordered phase
  • Magnesium
  • Mechanical properties
  • Mg–Dy–Zn alloy
  • Microstructure

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in


  • Guangli Bi

  • Daqing Fang

  • Weichuan Zhang

  • Jothi Sudagar

  • Qingxin Zhang

  • Jianshe Lian

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free