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首页> 外文期刊>Materials science & engineering, C. Materials for Biogical applications >A study on the mechanical properties and corrosion behavior of the new as-cast TZNT alloys for biomedical applications
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A study on the mechanical properties and corrosion behavior of the new as-cast TZNT alloys for biomedical applications

机译：新型铸造TZNT合金对生物医学应用的力学性能和腐蚀行为的研究

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摘要

In this study, four different TZNT based alloys, (Ti55Zr25Nb10Ta10, (Ti55Zr25Nb10Ta10)(99.5)Fe-0.5, (Ti55Zr25Nb10Ta10)98Sn2, and (Ti55Zr25Nb10Ta10)(98.5)Ag-1.5, (at. %), designated TZNT, TZNT-Fe, TZNT-Sn, TZNT-Ag, respectively) are produced by non-consumable vacuum arc melting and suction casting. These alloys using the d-electron alloy design method and considering the criteria of [Mo]eq and (e/a)(ratio) for beta-phase Ti alloys are designed. The microstructure, mechanical properties, and corrosion behavior of the alloys are investigated via optical microscopy, scanning electron microscopy, X-ray diffraction, nanoindentation, and electrochemical tests. The designed alloys exhibit dendritic morphology, however, the TZNT-Ag alloy indicates a more homogenous microstructure after suction casting. X-ray diffraction analyses reveal not only the beta phase in the TZNT, TZNT-Fe, and TZNT-Ag alloys, but also beta lean/beta rich separation in the TZNT-Sn alloy. In addition to the microstructural features, the new TZNT alloys show very high ductility upon cold compressive deformation, as well as the lowest Young's modulus (65.54 +/- 1.7 GPa, P<0.05) is achieved in TZNT-Ag alloy. Furthermore, the compressive yield stress to Young's modulus (Y-cys/E) ratio of the designed alloys is in the range of 0.92-1.08%. In terms of corrosion behavior, Ag increases the corrosion resistance of the TZNT alloy in Ringer's solution. As a result, owing to the effect of Ag on the optimization of the mechanical properties and corrosion resistance of the TZNT alloy, the as-cast Ag-containing TZNT alloy can be developed to be a promising candidate for biomedical applications.
机译：在本研究中，四种不同的TZNT基合金（Ti55ZR25NB10TA10，（Ti55ZR25NB10TA10）（99.5）Fe-0.5，（Ti55ZR25NB10TA10）98SN2和（Ti55ZR25NB10TA10）（98.5）Ag-1.5，（AT.％），指定TZNT，TZNT- Fe，TZNT-SN，TZNT-AG分别由非耗材真空弧熔融和吸入铸造生产。这些合金使用D-Electron合金设计方法并考虑到β相Ti合金的[Mo] EQ和（比率）（比率）的标准。通过光学显微镜，扫描电子显微镜，X射线衍射，纳米狭窄和电化学测试研究了合金的微观结构，机械性能和腐蚀行为。设计的合金表现出树突形态，然而，TZNT-Ag合金表明抽吸后更加均匀的微观结构。 X射线衍射分析不仅揭示了TZNT，TZNT-Fe和TZNT-Ag合金中的β相，而且还揭示了TZNT-Sn合金中的β贫/β浓郁的分离。除了微观结构特征之外，新的TZNT合金在冷压缩变形时显示出非常高的延展性，以及在TZNT-Ag合金中达到最低的杨氏模量（65.54 +/- 1.7 GPA，P <0.05）。此外，设计合金的杨氏模量（Y-Cys / E）比的压缩屈服应力在0.92-1.08％的范围内。就腐蚀行为而言，AG增加了TZNT合金在Ringer溶液中的耐腐蚀性。结果，由于AG对TZNT合金的机械性能和耐腐蚀性的效果，可以开发含有盐的TZNT合金作为生物医学应用的有希望的候选者。

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