Age hardening and its modeling of Ti–2.5Cualloy

Song, Zhenya; Sun, Qiaoyan; Xiao, Lili; Sun, Junjie; Zhang, L.C.; Guo, Xianglong; Li, X.D.

doi:10.1016/j.msea.2013.01.003

Cited by 6 publications

(2 citation statements)

References 19 publications

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“…Titanium and titanium alloys (Ti and Ti alloys) possess superior biocompatibility and high specific strength [1][2][3]. Therefore, these alloys are widely applied for the fabrication of biomedical devices.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, the binary Ti-Cu alloy presented a eutectoid transformation with 7.1% Cu (wt%) content at 790 • C. The α phase and Ti 2 Cu were formed under these conditions. It has been previously shown that the eutectoid structure of the Ti-Cu alloy is α + Ti 2 Cu [3,13,15,[17][18][19]. The shape of Ti 2 Cu has been found to vary depending on its heat treatment and forging temperature [13,19].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Phase Distribution on the Antibacterial Property and Cytotoxicity of Ti-5Al-2.5Cu Alloy after Heat Treatment at Various Temperatures

Chang

Chao

Chang

et al. 2020

Metals

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Titanium alloys are widely employed for the fabrication of biomedical devices. In this study, we designed and developed a Ti-5Al-2.5Cu alloy, which exhibited antibacterial properties. Microstructure and elemental analyses were performed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and transmission electron microscopy (TEM). We evaluated the alloy’s antibacterial properties using Escherichia coli in the plate-count method. The cytotoxicity was examined using the MG-63 cell response by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and lactate dehydrogenase (LDH) assays. Microstructural analysis revealed that Ti-5Al-2.5Cu exhibited an equiaxed α’ martensite structure after short-term annealing. The heterogeneous and homogeneous α → α + Ti2Cu phase transitions occurred at ~840 and 920 °C, respectively. The antibacterial property for Ti-5Al-2.5Cu was varied by volume fraction in the Ti2Cu and Cu-rich phase, which was obtained using different heat treatments. The high volume fraction of the Ti2Cu and Cu-rich phase was observed after long-term annealing at 720–840 °C and thus exhibited a higher antibacterial rate. The relationship between phase distribution and the antibacterial property could be satisfied by a positive linear regression equation. Cytotoxicity results showed that heat treatments at different temperatures for Ti-5Al-2.5Cu alloys had no effect on cell viability. The optimal heat treatment for Ti-5Al-2.5Cu alloy was annealing at 760 °C for 24 h. After, the alloy exhibited both promising antibacterial performance and good cytocompatibility.

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Section: Introductionmentioning

confidence: 99%