β-titanium alloys, particularly the β-21S, are good candidates for several applications such as biomedical and aerospace industries due to their combination of promising mechanical properties. These alloys offer good fatigue resistance, a wide range of strength-to-weight ratios, deep hardening potential and inherent ductility, which is promoted by their Body-Centered Cubic (BCC) structure.
In addition to its other properties, β-21S titanium also has high cold-formability. When it is plastically deformed at room temperature, its initial equiaxed grain morphology remains unchanged regardless of the testing direction. This is due to the development of many slip bands aligned at ~35-50° to the axis of tensile loading within the grains. The deformation is primarily governed by a dominant dislocation/slip mechanism.
Some of my publications on β-Ti
Electron Channeling Constrast Imaging characterization and crystal plasticity modeling of dislocation activity in Ti21S bcc materials.
M. Ben Haj Slama, V. Taupin, N. Maloufi, K. Venkatraman, A.D. Rollett, R.A. Lebensohn, S. Berbenni, B. Beausir, A. Guitton
MATERIALIA, 2021, 100996
In situ macroscopic tensile testing in SEM and Electron Channeling Contrast Imaging: pencil glide evidenced in a bulk beta-Ti21S polycrystal.
M. Ben Haj Slama, N. Maloufi, J. Guyon, S. Bahi, L. Weiss, A. Guitton
MATERIALS, 2019, 12 (15), 2479