|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Biodegradable Materials for Medical Applications
||H-4: Microstructural Evolution and Mechanical Properties of Zn-Ti alloys for Biodegradable Stent Applications
||Zhiyong Yin, Jeremy Goldman, Jaroslaw Drelich
|On-Site Speaker (Planned)
Zinc exhibits near-ideal biocorrosion behavior. However, pure zinc has poor mechanical properties. In this study, a series of Zn-Ti alloys with the Ti content of less than 3 wt% was developed, and their structure-property relationships were studied with the primary goal of finding suitable Zn-Ti alloy(s) that could be used for biodegradable endovascular stents. The average hardness of as-cast Zn-Ti alloys was increased with the Ti content increasing from 0.1 to 0.3 wt%. With increasing Ti content from 0.5 to 2.5 wt%, the average hardness of the Zn-Ti alloys increased from 51 to 99 HV. The UTS and yield strength for Zn-Ti alloys increased from 141 and 87 MPa to 177 and 122 MPa with the Ti content increasing from 0.3 to 1 wt%. The mechanical properties of as-cast Zn-Ti alloys still need to be improved by the use of extrusion/hot rolling to facilitate their application as endovascular stents.
||Planned: Supplemental Proceedings volume