Strain-dependent damping of Ti-10V-2Fe-3Al at room temperature

The Ti-10V-2Fe-3Al alloy is advantageous over other titanium grades due to its high tensile strength and its high resistance against creep, cracking, and corrosion. The investigated alloy was hammer-forged inducing high strain rates in the material at a temperature of 800°C and underwent different cooling procedures. Three in that way thermomechanically treated specimens were prepared for subsequent study of the vibration behaviour of the material with the help of non-destructive, contact-free acoustic measurements. Resulting time-dependent decaying acoustic signals were analysed to investigate the dependence of the material damping behaviour on the individual downstream thermal treatment procedure and, ultimately, on the microstructural changes.