5. Optimization strategy

Adapting the mechanical properties of these alloys for biomedical applications requires the development of strategies for increasing stress levels while maintaining a low modulus of elasticity. In implantology, for example, values of 900 MPa are frequently cited as the limit to fracture.

However, while the apparent modulus of elasticity of β-metastable titanium alloys after quenching is remarkably low, their mechanical strength is insufficient. Critical stress levels to trigger martensitic transformation are low, leading rapidly to plastic deformation and then fracture. The optimization of their properties has been the subject of numerous studies in recent years, and various avenues have been explored.