Influence of Swaging on Microstructure, Elastic Modulus and Vickers Microhardness of β Ti-40Nb Alloy for Implants

Santos, Rafael Formenton Macedo dos; Ricci, Virgilio Pereira; Afonso, Conrado Ramos Moreira

doi:10.1007/s11665-021-05706-3

Cited by 14 publications

(10 citation statements)

References 28 publications

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“…The Ti-40Nb-10Ag alloy is used for implant material in orthopedics, which is mainly subjected to the compressive stress after implantation in the body [1,28,29]. Therefore, the compressive performance tests of alloys are important to its functionality.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…Ti-40Nb-based shape memory alloys have received increasing attention due to their superior biocompatibility, nontoxic elements, high mechanical strengths-to-weight ratio, low density, low elastic modulus (reduction of stress shielding effects), and excellent shape memory properties. They have been widely used as novel Al-, V-, and Ni-free biomaterials for orthopedic and dental implants to avoid the potential risk of Al, V, and Ni hypersensitivity [1][2][3]. Among the Ti-40Nb based materials, superelastic behavior caused by the stress-induced martensitic transformation between cubic β phase and orthorhombic α" martensite phase is observed in the Ti- (25.5-27) at.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Zhu

Zhang

Chen

et al. 2022

Metals

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Bacterial infection and stress shielding are important issues in orthopedic implants. In this study, Ag element was selected as an antibacterial agent to develop an antibacterial Ti-40Nb-10Ag alloy by spark plasma sintering (SPS). The microstructure, phase constitution, mechanical properties, microhardness, and antibacterial properties of the Ti-40Nb-10Ag sintered alloys with different sintering temperatures were systematically studied by X-ray diffraction (XRD), scanning electron microscope (SEM), microhardness tests, compressive tests, and antibacterial tests. The Ti-40Nb-10Ag alloys were mainly composed of α-Ti, β-Ti, and Ti2Ag intermetallic phases. This study shows that the change in sintering temperature affects the microstructure of the alloy, which results in changes in its microhardness, compressive strength, elastic modulus, and antibacterial properties. At the sintering temperature of 975 °C, good metallurgical bonding was developed on the surface of the alloy, which led to excellent microhardness, compressive strength, elastic modulus, and antibacterial ability with an antibacterial rate of 95.6%. In conclusion, the Ti-40Nb-10Ag alloy prepared by SPS at 975 °C is ideal and effective for orthopedic implant.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Zhu

Zhang

Chen

et al. 2022

Metals

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“…Yet, the presence of α´ and α″ also have been associated to the decreasing of elastic modulus [7][8][9] . In addition, Nb is an excellent β phase stabilizer, plays a significant role in reducing the elastic modulus improving Ti-based alloys' corrosion resistance 10,11 . Besides that, it is essential to say that Nb has a relatively lower melting temperature than other β phase stabilizers, such as V, Ta, and Mo, resulting in less energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Wear Behavior of Ti-xNb Biomedical Alloys by Ball Cratering

Mattos,

Kuroda,

Rossi

et al. 2024

Mat. Res.

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Ti alloys have been developing through the years, aiming the biomedical application since it has suitable properties. Among Ti alloys, the Ti-Nb systems are a pronounced group to biomedical applications due to its low elastic modulus, good corrosion resistance, and mechanical properties. Although this system is quite well-known regarding its phases, structure and properties, there is not plenty of information about wear available in the literature. To investigate the wear resistance, the samples were submitted to x-ray diffraction (XRD) and scanning electron microscopy (SEM) to analyze the phases formed. Hardness and elastic modulus were measured by microhardness Vickers and dynamic Young modulus by excitation impulse. Additionally, wear volume, wear resistance, and H/E ratio were calculated to understand the wear material's performance. This study aims to investigate the wear resistance of Ti-xNb (x = 15, 25 and 40wt.%), one of each type of Ti alloys and phases formed: Ti-15Nb (α´), Ti-25Nb (α") and Ti-40Nb (β) and the influence of cooling rate after solution heat treatment on wear properties through ball cratering. It was possible to find that the harder the alloy, the higher the wear resistance. Thus, in the case of Ti-xNb (x = 15, 25 and 40wt.%), alloys the hardness plays a significant role in wear resistance. Besides that, the samples that have presented the α´ or α"phase have the lowest wear resistance. Therefore, not only the hardness influences the wear resistance but also the combination of phases formed.

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“…Thermomechanical processes are widely used to obtain semi-finished products and to adjust some mechanical properties of metallic materials [31][32][33][34][35] . Among these processes, it can mention cold, hot rolling, and rotary swaging.…”

Section: Introductionmentioning

confidence: 99%

“…While hot rolling produces longitudinal deformation in the metallic material, hot swaging, or rotary forging, promotes radial deformation through the sample. These processes apply plastic deformation in order to shape the metallic materials and promote recrystallization, texture, and/or phase transformation, which influences these materials' properties [31][32][33][34][35] . In the case of β-Ti alloys, plastic deformation induces the phase transformation from β to α″ phase (SIM), which in turn leads to a decrease in the values of the elastic modulus, and therefore is a crucial processing route for the optimization of β titanium alloys [32][33][34][35] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Hot Rolling on β Ti-Nb-Zr(-Ta) Multiprincipal Alloys for Biomedical Application

Santos,

Kuroda,

Reis

et al. 2023

Mat. Res.

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With increasing life expectancy, revision surgeries have become more frequent in implanted people. This is due to the biological and biomechanical incompatibility that generates, among others, problems such as stress shielding. This works aims to analyze the influence of the hot rolling process (HR sample) on the microstructure and, consequently, the properties of β-Ti multiprincipal alloys: Ti-27Nb-39Zr (39Zr), Ti-30Nb-50Zr (50Zr), and Ti-20Nb-30Zr-13Ta (30Zr) (wt. %.) (equimassic and with high content of β-stabilizer elements). All samples were subjected to characterization through X-ray diffraction (XRD) to determine the phases present, and optical microscopy (OM) and scanning electronic microscopy (SEM) were realized to characterize the microstructure and confirm the phases obtained through XRD. Before hot rolling, only the β phase was identified, but in the HR condition, the α and β phases were identified. Consequently, it did not observe significant changes in microhardness for all alloys, while the elastic modulus was observed with a reduction of 23% for 39Zr, 46% for 40Zr, and 13% for 30Zr. The hot rolling processing was confirmed to be a helpful route to reduce the elastic modulus for β Ti multiprincipal alloys opening perspectives for applying such alloys as metallic implant materials.

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Influence of Swaging on Microstructure, Elastic Modulus and Vickers Microhardness of β Ti-40Nb Alloy for Implants

Cited by 14 publications

References 28 publications

Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Synthesis, Characterization and Antimicrobial Studies of Ti-40Nb-10Ag Implant Biomaterials

Wear Behavior of Ti-xNb Biomedical Alloys by Ball Cratering

Influence of Hot Rolling on β Ti-Nb-Zr(-Ta) Multiprincipal Alloys for Biomedical Application

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