Abstract
A new series of zinc alloys is in development for bioresorbable stent implantation to alleviate the current materials’ long-term complications. Characterization and optimization of the microstructure and corresponding mechanical properties during manufacturing stages will help researchers meet the required values. In this study, the effect of hot extrusion on the Zn-Ag-Mn-Cu-Zr-Ti alloy is characterized. Additionally, thermal treatments at 390 °C for 15, 25, 40, 60, and 120 min were performed to evaluate the effect of intermetallic phase fractions on the corrosion resistance and mechanical strength. Quantitative analysis of X-ray diffraction data demonstrates that the fractions of the MnZn13, ZrZn22, and Zn0.75Ag0.15Mn0.10 intermetallic phases decrease as the thermal treatment time increases. Corrosion tests reveal a reduction in the corrosion rate of the extruded alloy after thermal treatment. The results of uniaxial compression tests and tensile tests show lower strength and higher ductility in all heat-treated conditions compared with the as-extruded condition.
Keywords
- Zinc alloys
- Biodegradable stent
- Corrosion behavior
- Mechanical properties
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U.S. National Institute of Health—National Heart, Lung, and Blood Institute grant 1R01HL144739-01A1 is acknowledged for funding this work.
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© 2023 The Minerals, Metals & Materials Society
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Summers, H.D., Ardakani, M.S., Drelich, J.W. (2023). The Effects of Thermal Treatment on the Properties and Performance of Hot Extruded Zn-Based Bioresorbable Alloy for Vascular Stenting Applications. In: TMS 2023 152nd Annual Meeting & Exhibition Supplemental Proceedings. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22524-6_26
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DOI: https://doi.org/10.1007/978-3-031-22524-6_26
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