Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (1): 23-30.DOI: 10.1007/s40195-018-0804-7

Special Issue: 2019年镁合金专辑

• Orginal Article • Previous Articles     Next Articles

A High-Ductility Mg-Zn-Ca Magnesium Alloy

Teng Tu1, Xian-Hua Chen1,2(), Jiao Chen1, Chao-Yue Zhao1, Fu-Sheng Pan2,3   

  1. 1.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
    2.National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, China
    3.Chongqing Academy of Science and Technology, Chongqing 401123, China
  • Received:2018-04-28 Revised:2018-07-19 Online:2019-01-10 Published:2019-01-18
  • Contact: Chen Xian-Hua
  • About author:

    Author brief introduction:Dao-Kui Xu Professor of IMR, CAS, and “Young Merit Scholar” of Corrosion Center in the Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS). He achieved Ph.D. degree from IMR, CAS, in 2008, during which he obtained “Chinese Academy of Sciences-BHP Billiton” Scholarship award, “Shi Changxu” Scholarship award and “Zhu-LiYueHua” Excellent Doctorate Student Scholarship of Chinese Academy of Sciences. He worked as a Research Fellow in ARC Center of Excellence, Design of Light Metals, Department of Materials Engineering, Monash University, Australia (2008.10-2011.10). He published more than 60 peer-reviewed scientific papers, attended 20 invited lectures and holds seven patents. His papers were cited more than 1200 times. His research interests mainly include: (1) fatigue behavior and fracture toughness of light metals, such as Mg, Al and Ti alloys; (2) effects of alloying, heat treatment and thermomechanical processes on the microstructural evolution and mechanical improvement of light metals; (3) corrosion, stress corrosion cracking and corrosion fatigue behavior of lightweight alloys; and (4) design of new lightweight alloys with a good balance of properties in terms of mechanical property and corrosion resistance.

Abstract:

A new kind of Mg-2Zn-0.6Ca (wt%) alloy was fabricated by casting and hot extrusion as a high-ductility structural material. The extruded alloy exhibits a superior elongation of ~30%, yield strength of 130 MPa and ultimate tensile strength of 280 MPa along the extrusion direction at room temperature. Microstructure, texture and tensile properties of the extruded alloy were investigated in details. The remarkable improvement of ductility is ascribed to the weakened basal texture, refined grains and a small number of second phase in the alloy.

Key words: Magnesium alloy, Mg-Zn-Ca, High ductility, Extrusion, Texture