@article{Liu2026, 
author = {C. Liu and H. Yu and Z.X. He and W. Yu and H.Y. Ma and Q.Z. Wang and Y.L. Xu and Q. Xu and S.H. Park and F.X. Yin},
title = {Damping behavior of as-extruded pure Mg and Mg-Bi binary alloys},
year = {2026},
journal = {Journal of Magnesium and Alloys},
volume = {16},
number = {C},
keywords = {Microstructure, Mechanical property, Damping mechanism, Mg-Bi alloys},
url = {https://www.sciopen.com/article/10.1016/j.jma.2026.101999},
doi = {10.1016/j.jma.2026.101999},
abstract = {Based on cost-effective wrought Mg-Bi based alloy with high strength and ductility, this study investigates the damping properties of Mg-xBi (x: 3, 6, 9 wt.%) binary alloys at both ambient and elevated temperatures. The results reveal that as-extruded Mg-6Bi and Mg-9Bi alloys not only maintain adequate strength but also exhibit superior damping performance at room temperature compared to alloys with similar strength. The damping behavior of Mg-xBi binary alloys aligns with the Granat-Lücke dislocation pinning model, and their damping performance improves with increasing strain (ε). In comparison to as-extruded pure Mg, the addition of Bi significantly enhances high-temperature damping properties. The high-temperature damping behavior of Mg-xBi binary alloys is consistent with the viscoelastic relaxation mechanism, with damping performance decreases as vibration frequency (f) increases. Notably, when f exceed 5 Hz, the influence of frequency on damping performance becomes negligible. The P1 peak observed in the damping curves of Mg-xBi binary alloys demonstrates distinct thermal activation characteristics. The activation energies for the P1 peak in as-extruded pure Mg and Mg-xBi alloys are 128.1 kJ/mol, 133.5 kJ/mol, 134.1 kJ/mol, and 138.3 kJ/mol, respectively.}
}