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.

中文翻译：

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血管支架用镁合金微管在径向压应力与动态介质耦合作用下抗降解性能恶化

镁合金的降解关系到镁合金可生物降解植入物的使用性能。为了研究镁合金作为血管支架材料在临近使用环境中的降解行为，对用于制造血管支架的热挤压细晶Mg-Zn-Y-Nd合金微管进行了径向压缩试验。动态汉克斯平衡盐溶液 (HBSS) 中的应力。结果表明，高流量加速了镁合金微管的降解，且其降解对径向压应力敏感。这些结果有助于了解镁合金作为血管支架材料的使用性能。