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

Cincă, Ion; Nocivin, Anna; Răducanu, Doina; Gloriant, T.; Gordin, D.M.; Dan, Ioan; Căprarescu, Andreea; Cojocaru, Vasile

doi:10.4149/km_2015_1_17

Cited by 5 publications

(4 citation statements)

References 32 publications

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“…The key feature of Ti-Nb-Ta-Zr (TNTZ) alloy is represented by the excellent combination of mechanical properties (high strength-low elastic modulus) and its unique compositional design, which ensures a high biocompatibility with human bone due to the use of non-toxic elements (Ti, Nb, Ta, Zr). Considering the demand of an appropriate elastic modulus of 30 GPa, in order to avoid the stress shielding effect, which leads to bone atrophy [2][3][4][5][6], it was proven that TNTZ alloy can exhibit an elastic modulus between (45-75) GPa, depending on applied cold-deformation intensity [36]. At the same time, in order for TNTZ alloys to be used in load-bearing applications (such as narrow dental implants), a higher mechanical strength is required, which is also achieved by large plastic deformations, by dislocation and grain boundary strengthening.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the processing route, containing both cold-deformation and thermal treatments, the elastic modulus of TNTZ or other similar alloys (TZN, TNZ) was drastically influenced [36][37][38][39][40][41][42][43][44]. If phase changes occur during cold-deformation and/or thermal treatments, the β-Ti/α"-Ti phase proportion and characteristics are strongly influenced as-well [38].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Angelescu

Dan

Ungureanu

et al. 2022

Metals

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One of the most important requirements for a metallic biomaterial is the mechanical biocompatibility, which means excellent mechanical properties—high strength and fatigue strength, but low elastic modulus, to be mechanically harmonized with hard tissues. In order to improve the mechanical and biocompatible performance of the Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy, the influence of cold plastic deformation and solution treatment on its properties were investigated. The Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy was fabricated by melting in a cold crucible furnace (in levitation) and then subjected to several treatment schemes, which include cold rolling and different solution treatments. Microstructural and mechanical characteristics of specimens in as-cast and thermo-mechanically processed condition were determined by SEM microscopy and tensile testing, for different structural states: initial as-cast/as-received, cold rolled and solution treated at different temperatures (800, 900, and 1000 °C) and durations (5, 10, 15, and 20 min), with water quenching. It was concluded that both cold rolling and solution treatment have important positive effects on structural and mechanical properties of the biomaterial, increasing mechanical strength and decreasing the elastic modulus. Samples in different structural states were also corrosion tested and the results provided important information on determining the optimal processing scheme to obtain a high-performance biomaterial. The final processing route chosen consists of a cold rolling deformation with a total deformation degree of 60%, followed by a solution heat treatment at 900 °C with maintenance duration of 5 min and water quenching. By applying this thermo-mechanical processing scheme, the Ti-25.5Nb-4.5Ta-8.0Zr wt% alloy showed an elastic modulus of 56 GPa (5% higher than in the as-cast state), an ultimate tensile strength of 1004 MPa (41.8% higher than in the as-cast state), a yield strength of 718 MPa (40.6% higher than in the as-cast state), and increased corrosion resistance (the corrosion rate decreased by 50% compared to the as-cast state).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Angelescu

Dan

Ungureanu

et al. 2022

Metals

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“…Therefore, new solutions were investigated, aiming at an increase of corrosion resistance and biocompatibility. Various binary, ternary and quaternary Ti alloys containing elements considered to be safe (Ti, Ta, Nb, Zr and Fe) [1,6,7], such as Ti-15Zr-5Nb [8], Ti-15Ta-15Nb [10], Ti-15Nb-5Zr-4Sn-1Fe [11] and Ti-29Nb-9Ta-10Zr [12][13][14], demonstrated superior mechanical properties and corrosion resistance compared to commercial alloys and CpTi [1,8,11,15].…”

Section: Introductionmentioning

confidence: 99%

SiC- and Ag-SiC-Doped Hydroxyapatite Coatings Grown Using Magnetron Sputtering on Ti Alloy for Biomedical Application

et al. 2022

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SiC- and Ag-SiC-doped hydroxyapatite (HA) coatings were deposited via magnetron sputtering aiming at increased corrosion protection of Ti-10Nb-10Zr-5Ta alloy in simulated body fluid environment and superior mechanical properties compared to plain hydroxyapatite. The coatings had a total thickness of about 350 nm. The X ray diffraction patterns indicate that HA coatings are polycrystalline with a hexagonal structure and the addition of SiC determined the coating amorphization. All coatings presented a lower roughness compared to the Ti alloy and were hydrophilic. Ag-SiC-HA coating presented the best corrosion resistance and tribological parameters. All coatings were biocompatible, as ascertained via indirect cytocompatibility studies conducted on Vero cells.

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“…Brizmer et al [10] developed a model for elastic-plastic contact between a deformable sphere and a rigid flat under combined normal and tangential loading with full-stick contact conditions. The indentation test can also be used to observe the influence of the applied test loads and microstructure on the measured hardness [11] or to the structural and mechanical characterisation of alloys [12].…”

Section: Introductionmentioning

confidence: 99%

Analysis of sheet surface roughness change under contact with flat and spherical indenters

Trzepieciński¹,

Bąk²,

Stachowicz³

et al. 2018

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In this paper, the effect of strain hardening on the elastic-plastic contact of steel sheets is considered using experiments. The effect of normal load and the effect of prestrain of the sheets on the change of surface roughness parameter values and real area of contact are analysed. Continuous indentation tests were performed on 2 mm thick DC04 steel sheets. The mechanical properties of the sheet metal were determined using uniaxial tensile tests along three directions concerning the rolling direction. Two cylindrical and spherical indenters were used in the investigations. It can be concluded that the real area of contact between a tool and a workpiece depends on the degree of sample prestrain, normal load and different flattening and roughening mechanisms of the deforming asperities. The effect of normal force on real contact area depends on the load value. The penetration depth value increases proportionally to the normal load.

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

Cited by 5 publications

References 32 publications

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

Effects of Cold Rolling Deformation and Solution Treatment on Microstructural, Mechanical, and Corrosion Properties of a Biocompatible Ti-Nb-Ta-Zr Alloy

SiC- and Ag-SiC-Doped Hydroxyapatite Coatings Grown Using Magnetron Sputtering on Ti Alloy for Biomedical Application

Analysis of sheet surface roughness change under contact with flat and spherical indenters

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