| Abstract Scope |
Biomedical high entropy alloys (Bio-HEAs) have gained attention for the manufacture of biomedical implants due to their combination of unique crystalline structures, low elastic modulus, and superior mechanical strength. Besides this, the current HEAs are mainly composed of potentially harmful and refractory alloying elements. In this scenario, this study aimed to create a novel Bio-HEA based on non-toxic, low-cost, and non-refractory alloying elements, including Ti, Zr, Mn, Al, Nb, and Fe. The ingots were produced by argon arc melting and heat-treated. The samples demonstrated formation of a dual-phase composition (BCC and HCP) by solid solution. Vickers microhardness measurements showed an average value above 450 HV, higher than some commercial metallic biomaterials. The elastic modulus values remained close to 95 GPa, below to the commercially pure Ti. The results indicated promising characteristics for potential use in biomedical applications, especially as bone fixation devices. (Financial support: FAPESP #2023/15812-2 and #2021/13921-3) |