Study on Zr-xCu and Zr-xSi alloys with low elastic modulus for improving stress shield effect

AbstractTi–xZr (x = 5, 15, 25, 35, 45% wt%) alloys with low elastic modulus and high mechanical strength were fabricated as a novel implant material. The biocompatibility of the Ti–xZr alloys was evaluated by osteoblast-like cell line (MG63) in terms of cytotoxicity, proliferation, adhesion, and osteogenic induction using CCK-8 and live/dead cell assays, electron microscopy, and real-time PCR. The Ti–xZr alloys were non-toxic and showed superior biomechanics compared to commercially pure titanium (cpTi). Ti–45Zr had the optimum strength/elastic modulus ratio and osteogenic activity, thus is a promising to used as dental implants.

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A novel biomedical titanium alloy with high antibacterial property and low elastic modulus

Journal of Material Science and Technology ◽

10.1016/j.jmst.2021.01.015 ◽

2021 ◽

Vol 81 ◽

pp. 13-25

Author(s):

Diangeng Cai ◽

Xiaotong Zhao ◽

Lei Yang ◽

Renxian Wang ◽

Gaowu Qin ◽

...

Keyword(s):

Titanium Alloy ◽

Elastic Modulus ◽

Antibacterial Property ◽

Low Elastic Modulus ◽

Biomedical Titanium Alloy

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First-principles calculations for development of low elastic modulus Ti alloys

Physical Review B ◽

10.1103/physrevb.70.174113 ◽

2004 ◽

Vol 70 (17) ◽

Cited By ~ 235

Author(s):

Hideaki Ikehata ◽

Naoyuki Nagasako ◽

Tadahiko Furuta ◽

Atsuo Fukumoto ◽

Kazutoshi Miwa ◽

...

Keyword(s):

Elastic Modulus ◽

First Principles ◽

First Principles Calculations ◽

Ti Alloys ◽

Low Elastic Modulus

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Microstructural and Mechanical Properties of β-Type Ti–Nb–Sn Biomedical Alloys with Low Elastic Modulus

Metals ◽

10.3390/met9060712 ◽

2019 ◽

Vol 9 (6) ◽

pp. 712 ◽

Cited By ~ 13

Author(s):

Peiyou Li ◽

Xindi Ma ◽

Duo Wang ◽

Hui Zhang

Keyword(s):

Mechanical Properties ◽

Wear Resistance ◽

Elastic Modulus ◽

Martensite Phase ◽

Ti Alloy ◽

Martensitic Phase Transition ◽

Low Elastic Modulus ◽

Nb Content ◽

Biomedical Alloy ◽

Cp Ti

The microstructural and mechanical properties of β-type Ti85-xNb10+xSn5 (x = 0, 3, 6, 10 at.%) alloys with low elastic modulus were investigated. The experimental results show that the Ti85Nb10Sn5 and Ti75Nb20Sn5 alloys are composed of simple α and β phases, respectively; the Ti82Nb13Sn5 and Ti79Nb16Sn5 alloys are composed of β and α″ phases. The content of martensite phase decreases with the increase of Nb content. The Ti82Nb13Sn5 and Ti79Nb16Sn5 alloys show an inverse martensitic phase transition during heating. The Ti85Nb10Sn5 and Ti82Nb13Sn5 alloys with the small residual strain exhibit the good superelastic properties in 10-time cyclic loading. The reduced elastic modulus (Er) of the Ti75Nb20Sn5 alloy (61 GPa) measured by using the nanoindentation technique is 2–6 times of that of human bone (10–30 GPa), and is smaller than that of commercial Ti-6Al-4V biomedical alloy (120 GPa). The Ti75Nb20Sn5 alloy can be considered as a novel biomedical alloy. The wear resistance (H/Er) and anti-wear capability (H3/Er2) values of the four alloys are higher than those of the CP–Ti alloy (0.0238), which indicates that the present alloys have good wear resistance and anti-wear capability.

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Deformation mechanisms in surface nano-crystallization of low elastic modulus Ti6Al4V/Zn composite during severe plastic deformation

Scripta Materialia ◽

10.1016/j.scriptamat.2018.08.007 ◽

2018 ◽

Vol 157 ◽

pp. 142-147 ◽

Cited By ~ 14

Author(s):

Yuting Lv ◽

Zihao Ding ◽

Jing Xue ◽

Gang Sha ◽

Eryi Lu ◽

...

Keyword(s):

Plastic Deformation ◽

Elastic Modulus ◽

Severe Plastic Deformation ◽

Deformation Mechanisms ◽

Low Elastic Modulus

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Analysis on the Martensitic Transformation in the Ti-xNb Alloys Using a Phenomenological Theory

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.124-126.1669 ◽

2007 ◽

Vol 124-126 ◽

pp. 1669-1672 ◽

Cited By ~ 1

Author(s):

Hi Won Jeong ◽

Seung Eon Kim ◽

Chang Yong Jo ◽

Yong Tae Lee ◽

Joong Kuen Park

Keyword(s):

Mechanical Properties ◽

Elastic Modulus ◽

Martensitic Transformation ◽

Shape Memory ◽

Titanium Alloys ◽

Martensitic Transformations ◽

Phenomenological Theory ◽

Transition Elements ◽

Low Elastic Modulus ◽

Diffraction Peaks

The titanium alloys containing the Nb transition elements have been investigated as the Ni-free shape memory and the biomedical alloys with a low elastic modulus. The mechanical properties of the alloys depended upon the meta-stable phases like the α`, α``, ω. To study the martensitic transformations from the β to α`` or α` the Ti-xNb (x=0 to 40 wt%) alloys were melted into the button type ingots using a VAR, and followed by the water-quenching after the soaking at 1000oC for 2hrs. The crystallography of the martensitic phases in the water-quenched alloys was analyzed using a XRD. The diffraction peaks of the orthorhombic martensites were identified by the crystallographic relationship with the bcc matrix. The lattice parameters of the orthorhombic martensites were varied continuously with the contents of the Nb elements. The martensitic transformations of the alloys were studied using the phenomenological theory of Bowles and Mackenzie.

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Study of α”-Martensitic Transformation in Ti35NbxSn Alloys Subjected to Cryogenic Heat Treatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1158.17 ◽

2020 ◽

Vol 1158 ◽

pp. 17-26

Author(s):

Abraão Silva ◽

Thiago Figueiredo Azevedo ◽

Weslley Rick Viana Sampaio ◽

Luiz Carlos Pereira ◽

Sandro Griza

Keyword(s):

Heat Treatment ◽

Elastic Modulus ◽

Martensitic Transformation ◽

Cryogenic Treatment ◽

Quenching Temperature ◽

High Mechanical Strength ◽

Quenching Medium ◽

Β Phase ◽

Low Elastic Modulus ◽

Cryogenic Heat Treatment

TiNbSn alloys have been extensively researched due to several properties they exhibit, including high mechanical strength, low elastic modulus, superelasticity, shape memory effect, biocompatibility. The present study evaluated the cryogenic heat treatment in the Ti35NbxSn alloys (x = 0.0; 2.5; 5.0; 7.5). The alloys were arc melted, cold formed and quenched in both water and liquid nitrogen at-198° C. The Ti35Nb2.5Sn alloy was also aged after exposed to both quenching medium. Microstructure and microhardness analyses were performed. Cryogenic treatment was not enough for transformation of primary β phase into martensitic α” in alloys containing 5 and 7.5% Sn. Cryogenic treatment provided β to α” transformation in alloys containing 0 and 2.5% Sn. The Sn-free alloy was more likely to α" transformation in both quenching medium. The alloys microhardness increased with decrease of both quenching temperature and Sn content. The increase of α" is also related to the increase of the alloy microhardness after aging.

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Microstructure and Mechanical Properties of Rapidly Solidified β-Type Ti–Fe–Sn–Mo Alloys with High Specific Strength and Low Elastic Modulus

Metals ◽

10.3390/met9111135 ◽

2019 ◽

Vol 9 (11) ◽

pp. 1135 ◽

Cited By ~ 1

Author(s):

Li ◽

Ma ◽

Jia ◽

Meng ◽

Tang ◽

...

Keyword(s):

Mechanical Properties ◽

Elastic Modulus ◽

Volume Fraction ◽

High Yield ◽

Specific Strength ◽

High Specific Strength ◽

Microstructure And Mechanical Properties ◽

Low Elastic Modulus ◽

Mo Content ◽

Rapidly Solidified

The microstructure and mechanical properties of rapidly solidified β-type Ti–Fe–Sn–Mo alloys with high specific strength and low elastic modulus were investigated. The results show that the phases of Ti–Fe–Sn–Mo alloys are composed of the β-Ti, α-Ti, and TiFe phases; the volume fraction of TiFe phase decreases with the increase of Mo content. The high Fe content results in the deposition of TiFe phase along the grain boundary of the Ti phase. The Ti75Fe19Sn5Mo1 alloy exhibits the high yield strength, maximum compressive strength, large plastic deformation, high specific strength, high Vickers hardness, and large toughness value, which is a superior new engineering material. The elastic modulus (42.1 GPa) of Ti75Fe15Sn5Mo5 alloy is very close to the elastic modulus of human bone (10–30 GPa), which indicating that the alloy can be used as a good biomedical alloy. In addition, the large H/Er and H3/Er2 values of Ti75Fe19Sn5Mo1 alloy indicate the good wear resistance and long service life as biomedical materials.

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