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Journal of magnesium
and alloys

Current Issue

The deteriorated degradation resistance of Mg alloy microtubes for vascular stent under the coupling effect of radial compressive stress and dynamic medium

Available online 12 October 2023

Full Length Article

Mengyao Liu, Yabo Zhang, Qingyuan Zhang, Yan Wang, Di Mei, Yufeng Sun, Liguo Wang, Shijie Zhu, Shaokang Guan


The degradation of Mg alloys relates to the service performance of Mg alloy biodegradable implants. In order to investigate the degradation behavior of Mg alloys as vascular stent materials in the near service environment, the hot-extruded fine-grained Mg-Zn-Y-Nd alloy microtubes, which are employed to manufacture vascular stents, were tested under radial compressive stress in the dynamic Hanks’ Balanced Salt Solution (HBSS). The results revealed that the high flow rate accelerates the degradation of Mg alloy microtubes and its degradation is sensitive to radial compressive stress. These results contribute to understanding the service performance of Mg alloys as vascular stent materials.


Mg alloy;Microtubes;Degradation behavior;Radial compressive stress;Dynamic conditions

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