High-damping intermetallic compound Ti3Sn

The damping factor and Young's modulus have been measured in single-phase Ti3Sn using resonance mechanical spectroscopy and dynamic mechanical analysis. The behaviour of the alloy in the elastic domain is found to be non-linear. The compound demonstrates low elasticity and unusual high damping at 125 to 475 K, which can be related to a phase transition identified at about 350 K. With increase in the frequency, the damping factor decreases but Young's modulus increases non- monotonously.