A Biomedical Ti-35Nb-5Ta-7Zr Alloy Fabricated by Powder Metallurgy

Li, B. Q.; Lü, Xing

doi:10.1007/s11665-019-04294-7

Cited by 9 publications

(2 citation statements)

References 32 publications

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“…Consequently, intensified efforts have been dedicated to developing new types of biocompatible α + β and β titanium-based alloys, e.g., Ti-6Al-7Nb, Ti-13Nb-13Zr, or Ti-35Nb-5Ta-7Zr. These alloys consist of partially or completely non-toxic elements such as niobium (Nb), zirconium (Zr), molybdenum (Mo), tantalum (Ta), and tungsten (Wo) [25,26]. Owing to their superior corrosion resistance, high mechanical properties, and higher biocompatibility in comparison with commonly used Ti-6Al-4V, in particular, Ti-6Al-7Nb alloys' designed purpose was to be used in load-bearing implants [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…These alloys consist of partially or completely non-toxic elements such as niobium (Nb), zirconium (Zr), molybdenum (Mo), tantalum (Ta), and tungsten (Wo) [25,26]. Owing to their superior corrosion resistance, high mechanical properties, and higher biocompatibility in comparison with commonly used Ti-6Al-4V, in particular, Ti-6Al-7Nb alloys' designed purpose was to be used in load-bearing implants [26][27][28]. Ti-6Al-7Nb belongs to α + β titanium alloys; in it, Al and Nb stabilize the hexagonal close-packed α phase as well as the body-centered cubic β phase and maintain an equilibrium α + β dual phase at ambient temperature [29].…”

Section: Introductionmentioning

confidence: 99%

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Anisotropic Mechanical and Microstructural Properties of a Ti-6Al-7Nb Alloy for Biomedical Applications Manufactured via Laser Powder Bed Fusion

Milaege,

Eschemann,

Hoyer

et al. 2024

Crystals

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Through tailoring the geometry and design of biomaterials, additive manufacturing is revolutionizing the production of metallic patient-specific implants, e.g., the Ti-6Al-7Nb alloy. Unfortunately, studies investigating this alloy showed that additively produced samples exhibit anisotropic microstructures. This anisotropy compromises the mechanical properties and complicates the loading state in the implant. Moreover, the minimum requirements as specified per designated standards such as ISO 5832-11 are not met. The remedy to this problem is performing a conventional heat treatment. As this route requires energy, infrastructure, labor, and expertise, which in turn mean time and money, many of the additive manufacturing benefits are negated. Thus, the goal of this work was to achieve better isotropy by applying only adapted additive manufacturing process parameters, specifically focusing on the build orientations. In this work, samples orientated in 90°, 45°, and 0° directions relative to the building platform were manufactured and tested. These tests included mechanical (tensile and fatigue tests) as well as microstructural analyses (SEM and EBSD). Subsequently, the results of these tests such as fractography were correlated with the acquired mechanical properties. These showed that 90°-aligned samples performed best under fatigue load and that all requirements specified by the standard regarding monotonic load were met.

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