Alloy design of metastable α+β titanium alloy with high elastic admissible strain

Progress in the Optimization of Compositional Design and Thermomechanical Processing of Metastable β Ti Alloys for Biomedical Applications

“…At high temperatures, the β phase prevails, characterized by a BCC structure. 22,23 During the transformation, the most densely packed planes of β, represented as {110}, become the basal planes {0001} of α, resulting in 12 possible orientations or transformation variants between the two phases. Although the α phase's unit cell has a smaller lattice ratio, such as the c/a ratio (1.587), compared to ideal HCP structures (1.633), this value can slightly increase when interstitial elements (e.g., C, N, and O) and substitutional elements (e.g., Al) with smaller atomic radii than Ti are introduced into the lattice.…”

“…At equilibrium room temperature, pure Ti primarily exists in the α phase, characterized by a slightly distorted HCP structure. At high temperatures, the β phase prevails, characterized by a BCC structure. , …”