High damping and good mechanical properties combined in as-cast Mg-0.6%Zr-Zn ternary alloys

ABSTRACT

In this paper, the effects of Zn content on the mechanical and damping properties of Mg-0.6%Zr were investigated. The mechanical and damping properties of Mg-0.6%Zr-x%Zn samples were evaluated using tensile testing and dynamic mechanical analysis (DMA). The results showed that the mechanical properties of the alloy could be improved significantly by adding Zn, and that the damping properties of the alloy were high. The as-cast Mg-0.6% Zr-1.0% Zn exhibited excellent mechanical properties, exhibiting ${\sigma }_b=171$MPa and ${\sigma }_{0.2}=77$MPa. The alloy also had high damping capacity, with a damping value greater than 0.01.

KEYWORDS:

• Magnesium alloy
• Mg-Zr-Zn alloy
• Damping capacity
• Strengthening mechanism
• Damping mechanism
• Microstructure
• Mechanical properties
• Zinc

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was financially supported by the National Natural Science Foundation of China (51665012) and the Jiangxi province Science Foundation for Outstanding Scholarship (20171BCB23061, 2018ACB21020) and Primary Research & Development Plan of Jiang Xi Province.