β-titanium alloys, and particularly the β-21S, are good candidates for several applications, such as biomedical and aerospace industries, because of a combination of promising mechanical properties. They offer a good fatigue resistance, a wide range of strength to weight ratios, a deep hardening potential, and an inherent ductility that is promoted by their Body-Centered Cubic (BCC) structure.
In addition, β-21S titanium exhibits high cold-formability. When plastically deformed at room temperature, its initial equiaxed grain morphology does not change, irrespective of the testing direction. Many slip bands aligned at ~35–50° to the axis of tensile loading develop within the grains; the deformation is 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