Mechanical properties enhancement in Ti–29Nb–13Ta–4.6Zr alloy via heat treatment with no detrimental effect on its biocompatibility

Najdahmadi, Avid; Zarei-Hanzaki, A.; Farghadani, E.

doi:10.1016/j.matdes.2013.09.007

Cited by 33 publications

(24 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2). The analysis revealed the (β + α") structure for the solution-treated TNTZ alloy as reported previously [11,12]. On the other hand, both warm-deformed TNTZ alloys demonstrated a complex phase constitution composed of α, β, and ω phases.…”

Section: Resultssupporting

confidence: 80%

“…The thermodynamic analysis rationalizes the present interpretation of the β-stability in the warm-deformed TNTZ alloys as well as the previous results [28,29]. Moreover, the degree of athermal-martensitic transformation is a function of the difference between the martensitictransformation-starting (M s ) and terminal temperatures [11]. Although the terminal temperature is uniform for the present warm-rolled alloys, the M s temperature decreases with decreasing grain size as proven in the literature [20,33].…”

Section: Absence Of α" Martensite In the Tntz Alloy Deformed At 723 Ksupporting

confidence: 89%

“…The α' phase is a hexagonal-structured martensite, while α" is an orthorhombic martensite transformed from the parent β phase [5]. The ω phase with a hexagonal structure is another metastable phase between the β to α transformation [11]. Each phase constituent can be tailored by selecting a proper thermomechanical process, which affects mechanical properties considerably.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase transformation and its effect on mechanical characteristics in warm-deformed Ti-29Nb-13Ta-4.6Zr alloy

et al. 2015

View full text Add to dashboard Cite

Ti-29Nb-13Ta-4.6Zr (TNTZ) alloy has been extensively studied as it is promising for use in biomedical applications. Despite its potential, the effects of warm plastic deformation on the alloy have not yet been revealed. This study investigated the differences in phase constitution of two warm-deformed TNTZ alloys and revealed relevant mechanisms with particular attention to martensitic transformation. The influence of phase constituents on mechanical characteristics was discussed as well. The TNTZ alloy deformed at 823 K possessed α, β, and ω phases as well as α" martensite, and demonstrated a low Young's modulus and double-yielding phenomenon. In contrast, the alloy deformed at 723 K had no martensite but more ω phase, leading to increased strength, hardness, and Young's modulus. The absence of α" martensite in the alloy deformed at 723 K was interpreted in light of β-stability of the parent phase and reduced Ms temperature.

show abstract

Section: Resultssupporting

confidence: 80%

Section: Absence Of α" Martensite In the Tntz Alloy Deformed At 723 Ksupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phase transformation and its effect on mechanical characteristics in warm-deformed Ti-29Nb-13Ta-4.6Zr alloy

et al. 2015

View full text Add to dashboard Cite

show abstract

“…These characteristics are due to the stress-induced martensitic transformation and its reverse transformation, accompanied by the formation of ultra-fine beta grain by flash treatment at 873K, or omega precipitation by flash treatment at 573K. Moreover, these alloys contain non-toxic alloying elements, such as Nb, Ta, Mo and Zr, and exhibit superior biocompatibility [31][32][33] and lower toxicity than that of TA6V alloy [34].…”

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

View full text Add to dashboard Cite

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...

show abstract

“…Additionally, the preferred titanium alloy for biomedical applications should have low young's modulus to overcome critical issue stress shielding [4] . Recently, number studies focused to develop low young's modulus Ti alloy with non-toxic elements such as Mo, Nb, Sn, and Ta [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of as-cast Ti-Mo-xCr alloy for biomedical application

Senopati¹,

Sutowo²,

Utomo³

et al. 2016

AIP Conference Proceedings

View full text Add to dashboard Cite

Mechanical properties enhancement in Ti–29Nb–13Ta–4.6Zr alloy via heat treatment with no detrimental effect on its biocompatibility

Cited by 33 publications

References 24 publications

Phase transformation and its effect on mechanical characteristics in warm-deformed Ti-29Nb-13Ta-4.6Zr alloy

Phase transformation and its effect on mechanical characteristics in warm-deformed Ti-29Nb-13Ta-4.6Zr alloy

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

Microstructure and mechanical properties of as-cast Ti-Mo-xCr alloy for biomedical application

Contact Info

Product

Resources

About