Biocompatibility and corrosion resistance of low-cost Ti–14Mn–Zr alloys

Titanium and titanium alloys are widely spread in biomedical applications. The need to replace high-cost alloying elements is increasing, as well as the low biocompatibility elements. In the current study, the microstructure, mechanical properties, corrosion resistance, and cytocompatibility of the new biomedical Ti–14Mn– x Zr alloys were investigated ( x = 1.5, 3, and 6% wt. Zr). Homogenization, solution heat treatments, and cold deformation were applied. The results showed the predominance of the β-phase even after a high degree of deformation. The mechanical properties showed that Ti–14Mn– x Zr have ultra-high-strength values that reach 1830 MPa with low elongation. Furthermore, the severe deformation by cold rolling and increasing the Zr content enhances the corrosion resistance of Ti–14Mn– x Zr alloys. The cytotoxicity test shows that Ti–14Mn– x Zr alloys have very high cytocompatibility with cell viability within 96 ≈ 99%, representing a potential alloy that can be considered for further development of bio-applications. Graphical abstract