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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Improved mechanical properties of the new Ti-15Ta-xZr alloys fabricated by selective laser melting for biomedical application
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Improved mechanical properties of the new Ti-15Ta-xZr alloys fabricated by selective laser melting for biomedical application

机译：通过选择性激光熔化制造的用于生物医学的新型Ti-15Ta-xZr合金的机械性能得到改善

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摘要

In this study, we have developed new biocompatible Ti-15Ta-xZr (1.5, 5.5, 10.5 and15.5 wt%) alloys fabricated by selective laser melting. The SLM process inputs a mixture of 65% argon and 35% nitrogen to prevent oxidation and degradation of the alloys followed by appropriate post heat-treatment to improve the chemical homogeneity at high-temperatures. The microanalysis reveals that the microstructures of the Ti-15Ta-xZr alloys changed from a phase into b phase and finally became alpha + beta stable. The Photomicrograph of the alloy mini-plate osteosynthesis in the rat's tibia fracture reveals that the Ti-15Ta-10.5Zr alloy can enhance bone remodeling with no sign of osteomyelitis because it has the appropriate Young's modulus value of 42.93 +/- 3.28 GPa which is similar to that of the human cortical bone. Consequently, the Ti-15Ta-10.5Zr alloy proved to be the best combination of yield strength, tensile strength, and biological properties, making it a viable candidate for use in artificial hip joints, bone implants, etc. (C) 2016 Elsevier B. V. All rights reserved.
机译：在这项研究中，我们开发了通过选择性激光熔化制备的新型生物相容性Ti-15Ta-xZr（1.5、5.5、10.5和15.5 wt％）合金。 SLM工艺输入65％的氩气和35％的氮气的混合物，以防止合金氧化和降解，然后进行适当的后热处理，以提高高温下的化学均匀性。微观分析表明，Ti-15Ta-xZr合金的微观结构从a相转变为b相，并最终变为α+β稳定态。胫骨骨折中合金微型钢板骨合成的显微照片显示，Ti-15Ta-10.5Zr合金可以增强骨骼重塑而没有骨髓炎的迹象，因为它具有适当的杨氏模量值为42.93 +/- 3.28 GPa，即类似于人类的皮质骨。因此，事实证明，Ti-15Ta-10.5Zr合金是屈服强度，拉伸强度和生物学特性的最佳组合，使其成为用于人工髋关节，骨植入物等的可行候选者。（C）2016 Elsevier BV版权所有。

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