Titanium and its alloys became the master materials for bio-implants, possessing perfect stability inside the human body and excellent mechanical properties over traditional implant materials. Continuous development of commercial implant alloys, including Ti-6Al-4 V, results in approaching new Ti-alloys that are more biocompatible with the human body, replacing Al and V elements with vital alternatives. In this study, the influence of Zr addition to Ti–10Mo–xZr (x = 0, 3, 6 wt%) alloys during the thermomechanical processing on the phase stability, mechanical properties, and electrochemical behavior is investigated. Thermo-Calc software, which showed that Zr addition to Ti-10Mo reduces β-transus temperature and represents Zr as a β-stabilizer element. DSC experimental results agreed with the software calculations, approving Zr addition to minimize the α to β transformation temperature. XRD and SEM results revealed β phase as predominant in Ti–10Mo (94. 6%) and Ti–10Mo–6Zr (82. 3%), while Ti–10Mo–3Zr alloy exhibited (52. 5%) α-phase, with non-linear phase evolution with Zr content due to the dual effect of element addition and thermomechanical processing. The elastic modulus ranged from 108. 9 to 120. 4 GPa, with Ti–10Mo–3Zr achieving the lowest modulus. The scoped alloys achieved high compressive ductility (> 60%), which gives a good mechanical computability. Electrochemical evaluation in simulated body fluid revealed composition-dependent corrosion behavior, where β-rich alloys demonstrated enhanced polarization resistance, while microgalvanic effects in the Ti-10Mo-3Zr alloy increased corrosion susceptibility. The corrosion rates in simulated body fluid are 0. 21843 \, 10^ - 3, 4. 5714 \, 10^ - 3, and 0. 642 \, 10^ - 3 mm/year for Ti-10Mo, Ti-10Mo-3Zr, and Ti-10Mo-6Zr alloys, respectively.
Keshtta et al. (Mon,) studied this question.