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

Table 2

Fabrication processes and properties of novel Mg microtubes.

Alloys	Process	YS (MPa)	UTS (MPa)	EL (%)	HV	Outer diameter (mm)	Thickness (mm)	Microstructure and average grain size
AZ31	DE+CD+CD [24]	172	—	16	—	3	0.18	DRX; 12.9 μm
	Dieless drawing [26]	—	—	—	—	3.35	0.69	—
JDBM	DE+CD+CD [24]	123	—	26	—	3	0.18	DRX; 10.9 μm
	Double extrusion [27]	220	267	48.8		3.5	0.25	—
WE43	DE+CD+CD [24]	113	—	10	—	3	0.18	DRX; 15 μm
	CEE+DE+MTE [25]	—	410	18.5	114	3.3	0.22	DRX; 5.5 μm
	CEE [28]	—	440 at highest	21 at highest	114 at highest	—	—	DRX+unrecrystallized grains
	ECAE+DE+MTE [29]		340	20	102	3.3	0.22	DRX; 3.5 μm
Mg-Zn-Y-Nd	DE+CD+annealing [19]	196	298	20		2	0.15	DR; 4.4 μm
ZM21	DE+drilling+HIDE+CD [30]	—	—	—	—	2.9	0.2	DRX+unrecrystallized grains
	DE+drilling+IDE+CD [31]	—	—	—	—	2.9	0.217	Inhomogeneous fine grains and twins
	DE+ECAE [32]	340	353	11.5	—	2.4	0.4	Fine grain; 2 μm
Mg-4Zn-1Y	HDE+annealing	240	330	20.4	—	—	—	DRX; 20 μm