TMS 2023 152nd annual meeting & exhibition : supplemental proceedings. Minerals, Metals and Materials Society. Annual Meeting最新文献

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The Effects of Thermal Treatment on the Properties and Performance of Hot Extruded Zn-Based Bioresorbable Alloy for Vascular Stenting Applications. 热处理对用于血管支架应用的热挤压锌基生物可吸收合金的特性和性能的影响》（The Effects of Thermal Treatment on Properties and Performance of Hot Extruded Zn-Based Bioresorbable Alloy for Vascular Stenting Applications）。

TMS 2023 152nd annual meeting & exhibition : supplemental proceedings. Minerals, Metals and Materials Society. Annual Meeting

Pub Date : 2023-01-01 Epub Date: 2023-02-07 DOI: 10.1007/978-3-031-22524-6_26

Henry D Summers, Morteza S Ardakani, Jaroslaw W Drelich

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 Zn_0.75Ag_0.15Mn_0.10 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.

目前正在开发用于生物可吸收支架植入的新型锌合金系列，以减轻现有材料的长期并发症。在制造阶段对微观结构和相应的机械性能进行表征和优化将有助于研究人员达到所要求的数值。本研究分析了热挤压对 Zn-Ag-Mn-Cu-Zr-Ti 合金的影响。此外，还在 390 °C 下进行了 15、25、40、60 和 120 分钟的热处理，以评估金属间相分数对耐腐蚀性和机械强度的影响。X 射线衍射数据的定量分析表明，随着热处理时间的延长，MnZn13、ZrZn22 和 Zn0.75Ag0.15Mn0.10 金属间相的比例会降低。腐蚀测试表明，热处理后挤压合金的腐蚀速率降低。单轴压缩试验和拉伸试验的结果表明，与未挤压状态相比，所有热处理状态下的合金强度更低，延展性更高。

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