Mechanical properties and microstructures of cast Ti–Cu alloys

Kikuchi, Masafumi; Takada, Yukyo; Kiyosue, Seigo; Yoda, Masanobu; Woldu, Margaret; Zhuo, Chen; Okuno, Osamu; Okabe, Toru H.

doi:10.1016/s0109-5641(02)00027-1

Cited by 202 publications

(144 citation statements)

References 4 publications

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“…The hardened layer, that is almost unavoidable in investment-cast Ti and Ti-alloys, forms through the decomposition of the investment oxides and diffusion of the resulting elements into the casting. 24,25) Although the measurements were straightforward, the interpretation of the data are complex. Such effects as solution and/or precipitation hardening, grain size and crystal structure/phase would all affect the hardness of the alloy.…”

Section: )mentioning

confidence: 99%

Comparison among Mechanical Properties of Investment-Cast c.p. Ti, Ti-6Al-7Nb and Ti-15Mo-1Bi Alloys

Lin

2004

Mater. Trans.

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The present study compares castability and mechanical performance among alloys of c.p. Ti, Ti-6Al-7Nb and a newly-developed Ti-15Mo-1Bi in regard to their as-cast state. Experimental results indicate that average cast length of Ti-6Al-7Nb appears a little lower than c.p. Ti and Ti-15Mo-1Bi, although the differences are not significant. C.p. Ti has an hcp phase of lath-type morphology with serrated, irregular grain boundaries. Ti-6Al-7Nb is dominated by hexagonal 0 phase with acicular martensitic morphology. In particular, Ti-15Mo-1Bi is comprised of equiaxed, metastable bcc phase. The hardened layer thicknesses of three materials are similar. Ti-15Mo-1Bi has the highest surface microvickers hardness, while c.p. Ti has the lowest. The bulk hardness of c.p. Ti is much lower than the other two alloys which display similar hardness. Notably, Ti-15Mo-1Bi and Ti-6Al-7Nb have similar bending strength which is far higher than c.p. Ti. The bending modulus of Ti-15Mo-1Bi is significantly lower than c.p. Ti and Ti-6Al-7Nb. Ti-15Mo-1Bi also shows a much larger elastic recovery angle than two other materials. Tensile test indicates that Ti-15Mo-1Bi has a similar UTS but much higher YS and elongation along with much lower tensile modulus compared to Ti-6Al-7Nb.

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Section: )mentioning

confidence: 99%

Comparison among Mechanical Properties of Investment-Cast c.p. Ti, Ti-6Al-7Nb and Ti-15Mo-1Bi Alloys

Lin

2004

Mater. Trans.

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“…One of these elements is copper, which not only decreases the melting point of the alloy [4] but also provides adequate biocompatibility [5] and reasonable corrosion resistance [6,7]. Casting procedures are greatly favored.…”

Section: Introductionmentioning

confidence: 99%

“…Casting procedures are greatly favored. Kikuchi et al reported that Ti Cu alloys may present very high mechanical strength associated with good formability [6]. The Ti Cu system presents an eutectoid transformation with 7.1%Cu (wt%) at 790 • C; under these conditions, α-Ti and Ti 2 Cu are formed [8].…”

Section: Introductionmentioning

confidence: 99%

Basic Electrochemical Behavior of Ti-7Cu Alloys for Medical Applications

Tsao

2012

Acta Phys. Pol. A

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The aim of this study was to investigate the e ects of two di erent treatments, as-cast setup and solution heat treatment, on the general electrochemical corrosion resistance of Ti 7Cu alloy samples immersed in a 0.9 wt% NaCl solution at 25 • C. The microstructure was examined by scanning electron microscopy and X-ray di ractometry. Corrosion behavior was tested by potentiodynamic polarization curves. Finer α ′ martensite and Ti2Cu intermetallic particles were provided by casting and heat treated processes, respectively. The results indicated that only corrosion potential is signi cantly more noble in the heat treated sample, but other characteristics are only slightly di erent.

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“…Figure 14 compares the strength and elongation of Ti-5Ag-2.5Fe alloy with some clinically used dental alloys 19,[40][41][42][43][44][45][46][47] and some newly developed cast titanium alloys. 5,6,[48][49][50] For all binary titanium alloys except Ti-Mo alloy, the elongation decreases with the increase in yield strength. These changes in strength and ductility occur mainly because of the solid solution strengthening and precipitation hardening.…”

Section: Mechanical Propertiesmentioning

confidence: 97%

“…1,2 However, the insufficient strength and poor wear resistance of unalloyed titanium (Ti) was often complained. 3,4 Because the properties of unalloyed titanium are not suitable for certain purposes, many titanium alloys, such as titanium-copper 3,[5][6][7] alloys, titanium-silver alloys, [6][7][8][9][10] titanium-hafnium alloys, 11,12 and titanium-zirconium alloys 13 have been developed for dental application, and their properties have been studied mainly to improve the strength and castability of pure titanium.…”

Section: Introductionmentioning

confidence: 99%

Development of Ti‐Ag‐Fe ternary titanium alloy for dental application

Zhang

Wang

et al. 2011

J Biomed Mater Res

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A series of titanium-silver-iron ternary alloys have been prepared in this study, and their feasibility as dental materials has been evaluated by the microstructural examination, mechanical testing, corrosion resistance evaluation, surface analysis, and cytotoxicity tests. More and more b-Ti phase appears at room temperature and retains with the increasing of Fe content in Ti-5Ag-xFe alloy systems. The compression strength, wear resistance, and microhardness increase largely (p < 0.05) by the addition of element Fe to Ti-Ag alloy. Moreover, when comparing with commercial pure titanium (CP Ti), nobler electrochemical corrosion behavior could be obtained for Ti-5Ag-1Fe and Ti-5Ag-2.5Fe alloys in the 1% lactic acid solution (pH ¼ 2.1) and 0.1 mol/L H 2 O 2 þ 0.9% NaCl solution (pH ¼ 4.0). The released metal ions from Ti-5Ag-xFe alloys into the simulated fluid are trace, similar to the case of CP Ti. The addition of Fe slightly decreases the corrosion resistance of Ti-5Ag alloy. All experimental Ti-5Ag-xFe alloy extracts do not present any cytotoxicity to L-929 and NIH3T3 cell lines. All in all, the combination of superior corrosion resistance and enhanced mechanical properties make Ti-5Ag-1Fe alloy and Ti-5Ag-2.5Fe alloy suitable for dental applications.

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Mechanical properties and microstructures of cast Ti–Cu alloys

Cited by 202 publications

References 4 publications

Comparison among Mechanical Properties of Investment-Cast c.p. Ti, Ti-6Al-7Nb and Ti-15Mo-1Bi Alloys

Comparison among Mechanical Properties of Investment-Cast c.p. Ti, Ti-6Al-7Nb and Ti-15Mo-1Bi Alloys

Basic Electrochemical Behavior of Ti-7Cu Alloys for Medical Applications

Development of Ti‐Ag‐Fe ternary titanium alloy for dental application

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