Towards load-bearing biomedical titanium-based alloys: From essential requirements to future developments

Cui, Yu-Wei; Wang, Liqiang; Zhang, Lai-Chang

doi:10.1016/j.pmatsci.2024.101277

Cited by 7 publications

(2 citation statements)

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“…Metallic materials are vastly deployed in load bearing structures of the human body such as hip and knee implants because of their exceptional properties such as high mechanical strength, fatigue resistance and ease of machining. In such biomedical applications, it is important for the biomaterial to possess long term durability when implanted in the human body to support and stabilize the bone and joints 1 . Presently, at least two-thirds of implants are produced from metallic biomaterials such as stainless steel, cobalt-chromium alloys, and titanium and its alloys 2 .…”

Section: Introductionmentioning

confidence: 99%

“…The above drawbacks stimulated research into design and development of β-Ti type alloys with non-toxic elements such as niobium (Nb), tantalum (Ta), zirconium (Zr), molybdenum (Mo), and tin (Sn) ect, which are biocompatible, with moderate strength and the lowest modulus as compared to the Ti6Al4V alloy. The candidacy alloy are subjected to unique requirements such as biocompatibility which is essential for the interaction with human tissues in the biological environment, the mechanical properties such as moderate strength and low elastic modulus to avoid the stress shielding effects, the alloy must have high resistance to corrosion and wear resistance 1 . Current developed alloys to be used as metallic biomaterials include: Ti–13Nb–13Zr 7 , Ti–12Mo–6Zr–2Fe (TMZF) 8 , Ti–15Mo 9 , Ti–Nb 17 Ta 6 O 1 (TNTO) 10 , Ti–29Nb–13Ta–4.6Zr (TNTZ) 11 , Ti–35Nb–2Ta–3Zr 12 and Ti2448 13 alloys which demonstrated low elastic modulus, moderate strength, better corrosion properties when studied under different processing techniques.…”

Section: Introductionmentioning

confidence: 99%

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Influence of intermetallic phase (TiFe) on the microstructural evolution and mechanical properties of as-cast and quenched Ti–Mo–Fe alloys

Moshokoa,

Makhatha,

Raganya

et al. 2024

Sci Rep

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This study presents the phase analysis, microstructural characteristics, and mechanical property evaluation of the as-cast and quenched Ti–15Mo–xFe alloys with high iron content ranging from 4 to 12 weight percent. All the four alloys were produced in a vacuum-arc melting furnace. Heat treatment in the form of solution treatment was performed in a muffle furnace at a temperature of 1100 °C, with 1-h holding time and the samples were rapidly quenched in ice-brine. X-ray diffractometer (XRD) was used to analyses the phases present in each alloy whereas the optical microscope (OM) was employed to track the microstructural evolution and percentage porosity. The mechanical properties of the alloys were evaluated using a tensile test and compression test method while the micro-Vickers hardness measurements were conducted to evaluate hardness of the alloys. The XRD patterns of as-cast showed peaks belonging to the β and α″ phases and intermetallic B2 TiFe phases. The as quenched XRD peaks illustrated β phase only and Fe·Ti·O2 phases. The as-cast OM micrographs revealed equiaxed β grains, substructures, dendritic structure, and pores forming around the grain boundaries. The quenched OM showed only β equiaxed grains with pores throughout the grain boundaries. The tensile properties such as ultimate tensile strength (UTS) and elastic modulus (E) of as-cast TMF0 were 264 MPa and 79 GPa respectively and these properties changed upon quenching to 411 MPa and 66 GPa respectively. The elastic modulus of TMF1 in as-cast condition was 74 GPa. The UTS and E of TMF1, TMF2, and TMF3 in as-cast and quenched conditions were not recorded due to the fragility of the samples that failed prior to yielding any useful data. The compressive strength in as-cast and in quenched condition decreased with an increase in Fe content. The micro-Vickers hardness in as-cast and quenched conditions showed a similar trend with hardness increasing slightly upon quenching for TMF0, TMF1, and TMF3 alloys but slightly decreased in the case of TMF2. The fracture surfaces of all the as-cast and quenched alloys were comprised of ductile and brittle fracture.

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Section: Introductionmentioning

confidence: 99%