Microstructure, mechanical properties and biocompatibility of novel Ti-20Zr-xMo alloys

In this work, the microstructure, mechanical properties and biocompatibility of a novel Ti-Zr-xMo (x = 0, 5, 10, 15, 20 wt%) alloys were systematically studied. A single stable beta-phase is obtained in this study when the Mo content reaches 15 wt%. And the Ti-Zr-10Mo alloy reaches a maximum strength of about 1100 MPa due to the mechanism of second phase strengthening, solid solution strengthening and fine grain strengthening. However, the plasticity of the alloy is poor due to the precipitation of alpha' phase near the grain boundaries. Meanwhile, the biocompatibility of the alloy is discussed in this paper through in vitro experimental characterization, and it is found that the biocompatibility of the alloy consisting of a single beta-phase is better. (c) 2021 Elsevier B.V. All rights reserved.

Automated summary

The Ti-Zr-10Mo alloy exhibits high strength but poor ductility, and its biocompatibility is less favorable due to the presence of alpha' phase near grain boundaries. It is found that the biocompatibility of the alloy is better when it consists of a single beta-phase.