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
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