Design and Characterization of New Ti-Zr-Nb-(Mn) Medium Entropy Alloys for Biomedical Applications

β titanium alloys have been widely used as implantation inside the human body. Based on this, two β Ti-based medium entropy alloys (namely; Ti45Zr33Nb22 and Ti40Zr33Nb22Mn5, at. %) were designed using mean bond order (Bo) and mean d-orbital energy level (Md) diagram along with the CALPHAD approaches. The two alloys showed single β phase composed of a dendritic structure. When 5 at. % of Ti was replaced by Mn in Ti45Zr33Nb22alloy, the compressive yield strength has increased. Furthermore, the hardness was increased upon the addition of Mn. Finally, Ti45Zr33Nb22alloy showed good cold workability and slight hardness increase upon cold rolling up to 90% reduction.

[1]  Bo Li,et al.  Influence of Nb addition on microstructural evolution and compression mechanical properties of Ti-Zr alloys , 2021 .

[2]  K. An,et al.  Lattice‐Distortion‐Enhanced Yield Strength in a Refractory High‐Entropy Alloy , 2020, Advanced materials.

[3]  N. Stepanov,et al.  Exceptionally high strain-hardening and ductility due to transformation induced plasticity effect in Ti-rich high-entropy alloys , 2020, Scientific Reports.

[4]  T. Srivatsan,et al.  High Entropy Alloys , 2020, High Entropy Alloys.

[5]  C. Bolfarini,et al.  Comparative analysis of corrosion resistance between beta titanium and Ti-6Al-4V alloys: A systematic review. , 2020, Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements.

[6]  Aira Matsugaki,et al.  Novel TiNbTaZrMo high-entropy alloys for metallic biomaterials , 2017 .

[7]  A. Abdel-Moniem,et al.  Compatibility assessment of new V-free low-cost Ti–4.7Mo–4.5Fe alloy for some biomedical applications , 2016 .

[8]  Pooja Arora,et al.  Implant biomaterials: A comprehensive review. , 2015, World journal of clinical cases.

[9]  L. Poberezhnyi,et al.  Study of heat-resistant steel strain hardening by indentation , 2013, Metallurgist.

[10]  P. Drob,et al.  Synthesis and characterisation of a new superelastic Ti-25Ta-25Nb biomedical alloy. , 2010, Journal of the mechanical behavior of biomedical materials.

[11]  K. Tsuchiya,et al.  Microstructure, tensile deformation mode and crevice corrosion resistance in Ti–10Mo–xFe alloys , 2010 .

[12]  Bernd Baufeld,et al.  Mechanical properties of Ti-6Al-4V specimens produced by shaped metal deposition , 2009, Science and technology of advanced materials.

[13]  M. Morinaga,et al.  Phase stability change with Zr content in β-type Ti–Nb alloys , 2007 .

[14]  M. Morinaga,et al.  General approach to phase stability and elastic properties of β-type Ti-alloys using electronic parameters , 2006 .

[15]  C. Ju,et al.  Structure and properties of cast binary Ti-Mo alloys. , 1999, Biomaterials.

[16]  H. Rack,et al.  Titanium alloys in total joint replacement--a materials science perspective. , 1998, Biomaterials.