Large-strain functional fatigue properties of superelastic metastable β titanium and NiTi alloys: A comparative study

Héraud, Lorène; Castany, Philippe; Ijaz, Muhammad Farzik; Gordin, D.M.; Gloriant, T.

doi:10.1016/j.jallcom.2023.170170

Cited by 17 publications

(9 citation statements)

References 63 publications

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“…Accordingly, these findings suggested that the synthetic paediatric disc fabricated in the synthetic paediatric spine was acceptable. Here, we also envisage that the beta titanium alloys having advantageous mechanical properties that could serve promising potential for the fabrication of paediatric spines and other biomedical devices [ 27 , 28 , 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

Finite Element Modelling of a Synthetic Paediatric Spine for Biomechanical Investigation

et al. 2023

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Studies on paediatric spines commonly use human adult or immature porcine spines as specimens, because it is difficult to obtain actual paediatric specimens. There are quite obvious differences, such as geometry, size, bone morphology, and orientation of facet joint for these specimens, compared to paediatric spine. Hence, development of synthetic models that can behave similarly to actual paediatric spines, particularly in term of range of motion (ROM), could provide a significant contribution for paediatric spine research. This study aims to develop a synthetic paediatric spine using finite element modelling and evaluate the reliability of the model by comparing it with the experimental data under certain load conditions. The ROM of the paediatric spine was measured using a validated FE model at ±0.5 Nm moment in order to determine the moment required by the synthetic spine to achieve the same ROM. The results showed that the synthetic spine required two moments, ±2 Nm for lateral-bending and axial rotation, and ±3 Nm for flexion-extension, to obtain the paediatric ROM. The synthetic spine was shown to be stiffer in flexion-extension but more flexible in lateral bending than the paediatric FE model, possibly as a result of the intervertebral disc’s simplified shape and the disc’s weak bonding with the vertebrae. Nevertheless, the synthetic paediatric spine has promising potential in the future as an alternative paediatric spine model for biomechanical investigation of paediatric cases.

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Section: Resultsmentioning

confidence: 99%

Finite Element Modelling of a Synthetic Paediatric Spine for Biomechanical Investigation

et al. 2023

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“…The brittle ω phase exhibits the highest modulus and hardness among all phases present in Ti alloys [18]. In contrast, β-phase Ti alloys typically demonstrate excellent fatigue resistance characteristics [19][20][21].…”

Section: Phase Identificationmentioning

confidence: 99%

Experimental Investigation of the Impact of Niobium Additions on the Structural Characteristics and Properties of Ti–5Cr–xNb Alloys for Biomedical Applications

Hsu,

Wu,

Fang

et al. 2024

Materials

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In this study, a series of Ti–5Cr–xNb alloys with varying Nb content (ranging from 1 to 40 wt.%) were investigated to assess their suitability as implant materials. Comprehensive analyses were conducted, including phase analysis, microscopy examination, mechanical testing, and corrosion resistance evaluation. The results revealed significant structural alterations attributed to Nb addition, notably suppressing the formation of the ω phase and transitioning from α’ + β + ω to single β phase structures. Moreover, the incorporation of Nb markedly improved the alloys’ plastic deformation ability and reduced their elastic modulus. In particular, the Ti–5Cr–25Nb alloy demonstrated high values in corrosion potential and polarization resistance, signifying exceptional corrosion resistance. This alloy also displayed high bending strength (approximately 1500 MPa), a low elastic modulus (approximately 80 GPa), and outstanding elastic recovery and plastic deformation capabilities. These aggregate outcomes indicate the promising potential of the β-phase Ti–5Cr–25Nb alloy for applications in orthopedic and dental implants.

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“…Nickel-free Ti-Zr-Nb-based shape memory alloys (SMAs) are promising materials for medical applications due to their biocompatibility and high level of mechanical and functional properties [ 1 , 2 , 3 , 4 , 5 , 6 ]. Chemical composition, microstructure, phase state, and crystallographic texture have a significant impact on such properties of these alloys [ 7 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold Drawing and Annealing in Thermomechanical Treatment Route on the Microstructure and Functional Properties of Superelastic Ti-Zr-Nb Alloy

Kudryashova,

Lukashevich,

Derkach

et al. 2023

Materials

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In this study, a superelastic Ti-18Zr-15Nb (at. %) alloy was subjected to thermomechanical treatment, including cold rotary forging, intermediate annealing, cold drawing, post-deformation annealing, and additional low-temperature aging. As a result of intermediate annealing, two structures of β-phase were obtained: a fine-grained structure (d ≈ 3 µm) and a coarse-grained structure (d ≈ 11 µm). Cold drawing promotes grain elongation in the drawing direction; in a fine-grained state, grains form with a size of 4 × 2 µm, and in a coarse-grained state, they grow with a size of 16 × 6 µm. Post-deformation annealing (PDA) at 550 °C for 30 min leads to grain sizes of 5 µm and 3 µm, respectively. After PDA at 550 °C (30 min) in the fine-grained state, the wire exhibits high tensile strength (UTS = 624 MPa), highest elongation to failure (δ ≥ 8%), and maximum difference between the dislocation and transformation yield stresses, as well as the highest superelastic recovery strain (εrSE ≥ 3.3%) and total elastic + superelastic recovery strain (εrel+SE ≥ 5.4%). Additional low-temperature aging at 300 °C for 30–180 min leads to ω-phase formation, alloy hardening, embrittlement, and a significant decrease in superelastic recovery strain.

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Large-strain functional fatigue properties of superelastic metastable β titanium and NiTi alloys: A comparative study

Cited by 17 publications

References 63 publications

Finite Element Modelling of a Synthetic Paediatric Spine for Biomechanical Investigation

Finite Element Modelling of a Synthetic Paediatric Spine for Biomechanical Investigation

Experimental Investigation of the Impact of Niobium Additions on the Structural Characteristics and Properties of Ti–5Cr–xNb Alloys for Biomedical Applications

Effect of Cold Drawing and Annealing in Thermomechanical Treatment Route on the Microstructure and Functional Properties of Superelastic Ti-Zr-Nb Alloy

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