Recent Progress on Mg- and Zn-Based Alloys for Biodegradable Vascular Stent Applications

Figure 2

JDBM, AZ31, and WE43 microtubes with outer diameter of 3 mm and thickness of 180 μm [24]: (a) from hollow billet to stent; (b) cross-section of extruded blanks; (c) cold drawn tubes; (d) side surface of cold drawn tube. Microstructure of JDBM, AZ31, and WE43 extruded blanks: JDBM (e) cross-section and (f) longitudinal section; AZ31 (g) cross-section and (h) longitudinal section; WE43 (i) cross-section and (j) longitudinal section. Microstructure of cold drawn and annealed alloys: JDBM, (k) cold drawn and (l) annealed at 450°C for 1 h; AZ31, (m) cold drawn and (n) annealed at 450°C for 1 h; WE43, (o) cold drawn and (p) annealed at 450°C for 1 h.

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