Mechanical properties of low modulus ββ titanium alloys designed from the electronic approach

Laheurte, Pascal; Prima, Frédéric; Eberhardt, A.; Gloriant, T.; Wary, M.; Patoor, Étienne

doi:10.1016/j.jmbbm.2010.07.001

Cited by 212 publications

(108 citation statements)

References 14 publications

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“…The consequence is the stabilization of β phase, and the decrease of the critical cooling rates by which the transformations β→α and β→ω were completely suppressed for all cooling conditions. Many other authors agree that the higher the Ta content is, the lower will be the M s temperature [3,5,[18][19][20]. In the case of the sample 2 (after homogenization treatment) the martensitic transformation β→α was suppressed and the resulted structure was formed only by β phase, attested by XRD patterns in Fig.…”

Section: Results and Discussion For Xrd Measurementsmentioning

confidence: 84%

“…The ability of these metastable β-Ti alloys to undergo a deformation-induced martensitic transformation during cold-rolling has already been demonstrated [3,5]. The advantage of this phenomenon appearing, from biomedical point of view, is an additional decrease of the elastic modulus [5], besides the diminution determined by an increase of the Ta content [3,5,[21][22][23]. This aspect will be discussed below with nanoindentation measurement results.…”

Section: Results and Discussion For Xrd Measurementsmentioning

confidence: 88%

“…This problem can be resolved by using an alloy with an elastic modulus closer to that of the bone. On that direction, there have recently been developed new near-β and metastable-β titanium alloys with low elastic modulus, containing only non-toxic metallic alloying elements such as Nb, Ta, and Zr, etc., with excellent mechanical properties [1,5]. Zr is added to increase the strength, Ta to improve corrosion resistance *Corresponding author: tel./fax: +40 241606431; e-mail address: anocivin@univ-ovidius.ro and mechanical performance [6], while Nb is added as a β stabilizing element and for increasing hot workability, too [7].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

XRD and nanoindentation testing of thermo-mechanical processed Ti-29Nb-9Ta-10Zr alloy

Cincă¹,

Nocivin²,

Răducanu³

et al. 2021

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Ti-Nb-Ta-Zr alloys (TNTZ) represent a new class of biomaterials, due to nontoxic chemical elements and promising combination of high mechanical resistance with low elastic modulus close to the bone elasticity (E = 20-40 GPa). The present paper proposes a particular chemical composition of this β type Ti alloy -Ti-29Nb-9Ta-10Zr (wt.%) with a particular material structure. Structural and mechanical characterization of four distinct alloy conditions corresponding to each TM stage was performed using XRD measurements and also nanoindentation measurements. The obtained results represent a solid base for complex optimization of the alloy's structural characteristics.K e y w o r d s : beta titanium alloy, thermo-mechanical processing, XRD spectra, nanoindentation

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Section: Results and Discussion For Xrd Measurementsmentioning

confidence: 84%

Section: Results and Discussion For Xrd Measurementsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

XRD and nanoindentation testing of thermo-mechanical processed Ti-29Nb-9Ta-10Zr alloy

Cincă¹,

Nocivin²,

Răducanu³

et al. 2021

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“…One of the approaches is the development of new titanium alloys that do not contain chemical elements causing toxic and allergic reactions of the organism, based on molecular-orbital calculations of electron structures, followed by the creation of special structural-phase states by means of heat and deformation treatments, which allow obtaining lower values of elastic modulus (90…42 GPa) [8,[17][18][19][20]. However, numerous studies [8,[17][18][19][20] have shown that the reduction of the elastic modulus by the methods of alloying and structure formation is limited to a value of at least 40 GPa, which is still too high for the bone implant (see Table 2). …”

Section: Metallic Materials In Orthopedicsmentioning

confidence: 99%

Metallic materials for medical use

et al. 2017

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“…Depending on the type of thermomechanical treatment they have undergone, TiNb alloys, with a composition ranging from Ti-23Nb to Ti-26Nb, can have varying Young's modulus. Recently, we have demonstrated that severe cold rolling deformation followed by flash aging treatment on TiNb and TiNbZr, in order to produce ultra fine grains and/or omega phase, is more effective to improve strength [26][27][28][29][30]. High ultimate tensile strength (800 MPa), and low modulus (30 GPa) are obtained by nanostructuration process, as illustrated in Fig.…”

Section: Research Agency Through the Functional Materials And Innovatmentioning

confidence: 99%

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

Piotrowski

Baptista²,

Patoor

et al. 2014

Materials Science and Engineering: C

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Although mechanical stress is known as being a significant factor in bone remodeling, most implants are still made using materials that have a higher elastic stiffness than that of bones.Load transfer between the implant and the surrounding bones is much detrimental, and osteoporosis is often a consequence of such mechanical mismatch. The concept of mechanical biocompatibility has now been considered for more than a decade. However, it is limited by the choice of materials, mainly Ti-based alloys whose elastic properties are still too far from cortical bone. We have suggested using a bulk material in relation with the development of a new beta titanium-based alloy. Titanium is a much suitable biocompatible metal, and betatitanium alloys such as metastable TiNb exhibit a very low apparent elastic modulus related to the presence of an orthorhombic martensite. The purpose of the present work has been to investigate the interaction that occurs between the dental implants and the cortical bone. 3D finite element models have been adopted to analyze the behaviour of the bone-implant system depending on the elastic properties of the implant, different types of implant geometry, friction force, and loading condition. The geometry of the bone has been adopted from a mandibular incisor and the surrounding bone. Occlusal static forces have been applied to the implants, and their effects on the bone-metal implant interface region have been assessed and 2 compared with a cortical bone/ bone implant configuration. This work has shown that the low modulus implant induces a stress distribution closer to the actual physiological phenomenon, together with a better stress jump along the bone implant interface, regardless of the implant design.Keywords: Dental biomechanics, Beta titanium alloy, Low modulus implant, Numerical modelling, Bone-implant interface IntroductionOver the last few decades, considerable progress in dental implantology has been made, with success rates exceeding 95% [1]. Implant stability is commonly considered as playing a major role in a successful osseointegration. Obtaining post-operative osseointegration is necessary in order to establish a solid and durable connection between the implant and the osseous structure. In agreement with the Wolff law, a process of osseous remodelling adapted to the stress level occurs after implantation [2][3][4]. This process is controlled by mechanical loads.When the occlusal forces induced on the bone exceed a physiological level, bone resorption can occur, with possible failure [5]. More importantly, the long-term performance of an implant is known to be strongly dependent on the bone tissue interaction [6]. The strain state which takes place at the interface between the bone and implant controls the bone tissue remodelling mechanisms [7]. Bone resorption is associated with a low strain state, and bone necrosis occurs when strain exceeds the maximum level.Evaluation of the risk requires a comprehension of the load transfer along the bone-dental implant interface. T...

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Mechanical properties of low modulus ββ titanium alloys designed from the electronic approach

Cited by 212 publications

References 14 publications

XRD and nanoindentation testing of thermo-mechanical processed Ti-29Nb-9Ta-10Zr alloy

XRD and nanoindentation testing of thermo-mechanical processed Ti-29Nb-9Ta-10Zr alloy

Metallic materials for medical use

Interaction of bone–dental implant with new ultra low modulus alloy using a numerical approach

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