Metastability Engineering in Titanium Alloys Enables Advanced Structural/Functional Properties

Abstract

The concept of “metastability engineering” has been successfully used in metallic structural materials to enhance mechanical properties. In the present perspective, the authors propose that the metastability engineering strategy can be introduced to titanium (Ti) alloys by destabilizing the β phase and taking advantage of metastable phases mediated phase transformation and mechanical twinning. The utilization of metastability engineering strategy and associated structural and functional properties of Ti alloys are outlined.

Gallium-Containing Materials and Their Potential within New-Generation Titanium Alloys for Biomedical Applications

“…It is widely recognised that a reduction in Young's modulus can be observed by controlling thermomechanical treatments, and therefore, the phase transformations. Numerous research endeavours have investigated the effect of hardening mechanisms, including work hardening, grain boundary strengthening, or precipitation hardening [29,30,[36][37][38][39][40][41][42]. Notably, the strength properties of β-Ti-Nb-based alloys can be increased drastically using work hardening methods, as evidenced by yield strengths reaching 900 MPa and ultimate tensile strengths within the range of 1000 MPa [30,[36][37][38][39]43,44].…”