Keywords : magnesium alloy

A Mini Review on Biodegradable Magnesium Alloy Vascular Stent

Changsheng Liu; Yachen Hou; Jingan Li

Advanced Materials Letters, 2020, Volume 11, Issue 10, Pages 1-5
DOI: 10.5185/amlett.2020.101563

Biodegradable magnesium alloy stents are a new generation of vascular stents which can open up blocked blood vessels at an early stage, then degrade and be absorbed by the body at a suitable rate after the vascular has been repaired. Mg alloys are excellent materials for vascular stents benefit from their sufficient mechanical properties and good biocompatibility. At present, Mg alloy is also used as a green material in the research of vascular stents due to its biodegradable property. In this paper, based on the research situation of degradable Mg alloy stents in recent years, the research history, degradation mechanism, structural design and basic research experiments of Mg alloy stents are reviewed.

Creep resistance of a cast Mg-3Er-0.2Mn alloy

Wang Zhongjun; Zhu Jing; Wang Zhaojing; Kang Baohua

Advanced Materials Letters, 2011, Volume 2, Issue 2, Pages 153-156
DOI: 10.5185/amlett.2010.12222

In this paper, the microstructure and creep properties of a cast Mg-3Er-0.2Mn alloy was investigated. The results showed that the cast alloy under both as-cast and solution treated conditions is mainly composed of α-(Mg) matrix and Mg24Er5 phase particles. The value of activation energy Q (240~244KJ/mol), for creep deformation of the solution treated alloy, was calculated in the temperature range of 190~210 o C, and in the stress range of 50~60 MPa, respectively, which can explain that the creep mode involved cross slip of dislocations from basal to prismatic planes in the hexagonal structure or climb.