Effects of Ta content on Young’s modulus and tensile properties of binary Ti–Ta alloys for biomedical applications

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

“…It is well known that the Young's modulus of a dual-phase alloy is mainly determined by modulus of each individual phase and by their volume fractions as well. Therefore, the Young's modulus changes with the type of the phases existing in the alloy [1,23,30,31]. Initially, Han et al [1] in 2002, reported that the Young's modulus of α martensite is comparable with those of β phase.…”

“…Initially, Han et al [1] in 2002, reported that the Young's modulus of α martensite is comparable with those of β phase. After that, few years later, the contrary had been demonstrated -that there were significant differences in phase modulus: the β-phase had the lowest modulus among all possible phases in most Ti-based alloys, while the ω phase had the highest Young's modulus, and the martensite α had a middle value between β and ω phases, but a lower modulus than the martensite α -phase [23,30,31]. In that context, for present studied alloy, due to the disappearance of α" phase from β matrix after the homogenization treatment applied on S2, the obtained results for the sample S2 can be explained compared to sample S1 presented in Fig.…”

Corrosion Resistance After Mechanical Deformation of the Ti30Ta Experimental Alloy for Using in Biomedical Applications

“…When quenched from the β field Ti-Ta alloys with tantalum content between 30 and 50% have α'' structure 5 . From analysis of the X-ray spectra it is possible estimate that the cold working process promoted no significant phase changes in its microstructure.…”

“…Elements such as niobium (Nb), zirconium (Zr), molybdenum (Mo) and tantalum (Ta) are strong candidates since they allow the reduction of alloy is elastic modulus reaching values closer that of the bone (10-40 GPa) [3][4][5][6][7][8][9][10] . In particular, the Ti-30Ta alloy with α'' phase (martensite) has been shown as viable for applications in the manufacture of prostheses due to its excellent corrosion resistance and differentiated combination of low elastic modulus and high mechanical strength 5,11,12 . The selection of a material to be used in the manufacture of orthopedic implants implies meeting a number of requirements, especially in relation to mechanical strength…”

Influence of High Energy Milling Time on the Ti-50Ta Biomedical Alloy Structure

“…The Ti-Ta alloy elasticity modulus is significantly lower than the value of the modulus of the alloys currently used for implants. At the same time the tensile strength value is comparable to value of pure titanium and the cobalt based alloys [6][7][8]. Production of an alloy * corresponding author; e-mail: grzegorz.dercz@us.edu.pl belonging to the Ti-Ta alloy using traditional methods poses difficulties due to high differences in melting points (about 1350…”