Microstructure characterization and property tailoring of a biomedical Ti–19Nb–1.5Mo–4Zr–8Sn alloy

Wan, Weifeng; Liu, Huiqun; Jiang, Yong; Yi, Danqing; Yi, Ruowei; Gao, Qi; Wang, Dingchun; Yang, Qi

doi:10.1016/j.msea.2015.04.020

Cited by 19 publications

(7 citation statements)

References 45 publications

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“…The maximum observed tensile strength is ≈660 MPa, and the values reported here are comparable to those reported for the single β phase . We and others have observed higher strength values in the range of 800 to 1200 MPa, or even higher values occasionally, in some β alloys, were reported earlier. − However, the high strengths are attributed to the presence of fine precipitates of harder phases, such as α or ω within the β matrix.…”

Section: Discussionsupporting

confidence: 86%

Laser Powder Bed Fusion Additive Manufacturing of a Low-Modulus Ti–35Nb–7Zr–5Ta Alloy for Orthopedic Applications

et al. 2022

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Laser powder bed fusion (L-PBF) was attempted here to additively manufacture a new generation orthopedic β titanium alloy Ti–35Nb–7Zr–5Ta toward engineering patient-specific implants. Parts were fabricated using four different values of energy density (ED) input ranging from 46.6 to 54.8 J/mm3 through predefined laser beam parameters from prealloyed powders. All the conditions yielded parts of >98.5% of theoretical density. X-ray microcomputed tomography analyses of the fabricated parts revealed minimal imperfections with enhanced densification at a higher ED input. X-ray diffraction analysis indicated a marginally larger d-spacing and tensile residual stress at the highest ED input that is ascribed to the steeper temperature gradients. Cellular to columnar dendritic transformation was observed at the highest ED along with an increase in the size of the solidified features indicating the synergetic effects of the temperature gradient and solidification growth rate. Density measurements indicated ≈99.5% theoretical density achieved for an ED of 50.0 J/mm3. The maximum tensile strength of ≈660 MPa was obtained at an ED of 54.8 J/mm3 through the formation of the columnar dendritic substructure. High ductility ranging from 25 to 30% was observed in all the fabricated parts irrespective of ED. The assessment of cytocompatibility in vitro indicated good attachment and proliferation of osteoblasts on the fabricated samples that were similar to the cell response on commercially pure titanium, confirming the potential of the additively manufactured Ti–35Nb–7Zr–5Ta as a suitable material for biomedical applications. Taken together, these results demonstrate the feasibility of L-PBF of Ti–35Nb–7Zr–5Ta for potentially engineering patient-specific orthopedic implants.

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Section: Discussionsupporting

confidence: 86%

Laser Powder Bed Fusion Additive Manufacturing of a Low-Modulus Ti–35Nb–7Zr–5Ta Alloy for Orthopedic Applications

et al. 2022

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“…10,11 Previous studies [12][13][14][15] reported that ST followed by quenching involved phase transitions of the metastable b phase, and/or athermal omega (u ath ) phase, and/or martensite (a 00 ) phase in b type titanium alloys, where the u ath produced through quenching was different from the isothermal omega (u iso ) phase produced during aging. In general, b titanium alloys exhibit an unstable microstructure consisting of metastable b and u ath phases, or a single metastable b phase aer solid solution.…”

Section: Introductionmentioning

confidence: 99%

Effects of solution treatment and aging on the microstructure, mechanical properties, and corrosion resistance of a β type Ti–Ta–Hf–Zr alloy

et al. 2017

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Titanium and some of its alloys have become increasingly important for biomedical materials due to their high specific strength, good corrosion resistance, and excellent biocompatibility compared to the biomedical stainless steels and cobalt-chromium based alloys. In this study, a b type TTHZ alloy (Ti-40Ta-22Hf-11.7Zr) was prepared with the cold-crucible levitation technique. The corrosion behavior and the effects of solution treatment (ST) and aging on the microstructures and mechanical properties of the TTHZ alloy were investigated using electrochemical analysis, XPS (X-ray photoelectron

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“…The microstructure evolution of the β-Ti alloys during quenching and aging plays a significant role in tailoring properties, such as strength and Young's modulus [17]. Some investigations showed that quenching from β phase field of β-Ti alloys leads to the formation of microstructure α″ + ω + β [12,18,19].…”

Section: Introductionmentioning

confidence: 99%

Microstructure characterization and property tailoring of a biomedical Ti–19Nb–1.5Mo–4Zr–8Sn alloy

Cited by 19 publications

References 45 publications

Laser Powder Bed Fusion Additive Manufacturing of a Low-Modulus Ti–35Nb–7Zr–5Ta Alloy for Orthopedic Applications

Laser Powder Bed Fusion Additive Manufacturing of a Low-Modulus Ti–35Nb–7Zr–5Ta Alloy for Orthopedic Applications

Effects of solution treatment and aging on the microstructure, mechanical properties, and corrosion resistance of a β type Ti–Ta–Hf–Zr alloy

Precipitation hardening and microstructure evolution of the Ti–7Nb–10Mo alloy during aging

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