Skip to main content

Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent

Publication ,  Journal Article
Fu, J; Du, W; Du, X; Liu, K; Li, S; Wang, Z
Published in: Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
October 1, 2020

Magnesium alloys, as a new type of biodegradable medical metal material, have a promising application in the field of vascular stents. However, the poor deformability of Mg alloys due to hexagonal close-packed (hcp) structure makes it difficult to fabricate their thin tube. In this study, the micro-tubes of Mg-4Zn-0.2Mn-0.2Ca alloy, a new type of degradable magnesium alloy, with 3.1~3.6 mm in outer diameter and 0.25~0.4 mm in wall thickness were prepared by hot extrusion-drawing composite process. The microstructure evolution and mechanical properties of the one with 3.6 mm in outer diameter, 0.4 mm in wall thickness show that the crystal slip, twins and recrystallization occur during the plastic deformation of the tubes, and the work hardening is significant. This drawn tube exhibits a tensile strength of 427.3 MPa, yield strength of 383.4 MPa, and elongation of 5.2%. After annealing at 300℃ for 30 min, the microstructure becomes uniform and the elongation increases to 18.0%, which is conducive to the fabrication of vascular stents.

Duke Scholars

Published In

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

ISSN

1002-185X

Publication Date

October 1, 2020

Volume

49

Issue

10

Start / End Page

3576 / 3581

Related Subject Headings

  • Materials
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Fu, J., Du, W., Du, X., Liu, K., Li, S., & Wang, Z. (2020). Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 49(10), 3576–3581.
Fu, J., W. Du, X. Du, K. Liu, S. Li, and Z. Wang. “Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent.” Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 49, no. 10 (October 1, 2020): 3576–81.
Fu J, Du W, Du X, Liu K, Li S, Wang Z. Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering. 2020 Oct 1;49(10):3576–81.
Fu, J., et al. “Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent.” Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, vol. 49, no. 10, Oct. 2020, pp. 3576–81.
Fu J, Du W, Du X, Liu K, Li S, Wang Z. Fabrication and Properties of Magnesium Alloy Microtubes for Vascular Stent. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering. 2020 Oct 1;49(10):3576–3581.

Published In

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

ISSN

1002-185X

Publication Date

October 1, 2020

Volume

49

Issue

10

Start / End Page

3576 / 3581

Related Subject Headings

  • Materials