Abstract
The mechanical properties and degradation behavior of both as-cast and extruded Mg(100−7x)Zn6xYx alloys (x = 0.2, 0.4, 0.6, 0.8 at %) were systematically studied in this paper. The results indicated that with the increase in x value, the mechanical properties and corrosion resistance of the Mg(100−7x)Zn6xYx alloys were improved. The extruded Mg95.8Zn3.6Y0.6 alloy exhibited excellent mechanical properties, showing a tensile strength of 320 MPa, yield strength of 240 MPa, and elongation of 16%, which is much higher than that of commercially extruded AZ31 alloy. The weight loss experiment presented a higher degradation rate for the extruded Mg95.8Zn3.6Y0.6 alloy compared with the wrought AZ31 alloy, indicating a good bioactivity and biocompatibility. More detailed and long-term studies for evaluating and further controlling the degradation behavior of Mg–Zn–Y-based alloys remain to be performed.
Highlights
Compared with traditional biomedical titanium alloys and stainless steels, biodegradable magnesium (Mg) alloys are considered as revolutionary bio-metallic materials [1] due to their inherent properties
The degradation products of Mg can be eliminated from the body through urine and sweat
The most attractive advantage of Mg alloys is that it can be completely degraded in the human body, avoiding any requirement for secondary surgery to remove the implant
Summary
Compared with traditional biomedical titanium alloys and stainless steels, biodegradable magnesium (Mg) alloys are considered as revolutionary bio-metallic materials [1] due to their inherent properties. The most attractive advantage of Mg alloys is that it can be completely degraded in the human body, avoiding any requirement for secondary surgery to remove the implant. Their prospective utilizations in medical fields include vascular stent [3], orthopedic implants [4], and tissue engineering scaffold [5]. Many widely used commercial Mg alloys such as AZ91 and AZ31 contain the element of aluminum, which is good for strengthening in Mg alloys but acts as a toxic element to that elevates the risk of Alzheimer’s disease [9] Another problem of Mg is its relatively low mechanical strength
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
